My Girlfriend Cheated And It Turned Me On

When I was 14 me and my neghbor who was 13 started dating, early on we began sexually experimenting and lost our virginities at this age to eachother, our sex drives only continued to grow for eachother, at 15 and 14 I moved out to live with my dad who was 50 miles away, i did not get to see my girlfriend even 1 time for months besides facetime, a few months later I moved out to stay with my aunt who was only 20 miles away and she could get rides from her parents to come spend the night, I find out when she comes over that she is now on birth control and we can have sex without condoms which was amazing as condoms make me soft sometimes. I at the time thought nothing of it other than she wanted to make it better for me, about 4 months go by and we have a big argument and end up breaking up, after a little under a month goes by I can't help myself and go to her profiles and sign in to snoop around, I never snooped as I never thought to not trust her up to this point, but when I opened her Facebook messenger I found messages from her and a 38 year old married man she was babysitting for, the messages went back before I first moved away, she was babysitting for this man for about half a year before I moved away aswell, I went way back in her Google history and found a month or so before I moved away she was looking up sentences such as "how do I let a man know I like him?" "How do I make my boobs look bigger for men" and "how can I make a man hard while being around him". A month or so after I moved away she searched the exact terms "why do i like older much so much?" And "how do I keep a man's cum inside of me all day". she was 14 and i was 15 at this time, the Facebook messages revealed the true history between the two, they had sex many times in many different places throughout the months, they lived in a trailer park and the 38 year old man was the manager of the park so whenever their was a new or empty trailer waiting to be filled it was a location where he could Fill up my girlfriend instead, I read of atleast 8 times they had sex in empty trailers, she would also ride with him to various locations and give him road head or have sex on secluded backroads, he was very good at keeping it from his wife but at some point she caught on and I seen messages where she (28) confronted my (14) girlfriend about the flirting she seen and asked if my girlfriend was banging her husband, my girlfriend did not respond and instead told him about it, I was oblivious to all of this as I seen her once a week or every other week and did not live there either, her parents certainly didn't pay much attention, I later find messages of another neighbor in the park that she started sleeping with a few months before we broke up, a 32 year old man, I read messages where she said that after she woke up in the morning her ass still had marks on it from him, she told him she never had such intense sex in her life and she can't believe it did not make her cum (she never had an orgasm with me) there were confirmed days I found where she had sex with both men on the same day but separately, in the beginning this tore me up as I felt so betrayed, but after a week or so the betrayal and pain started to leave and I was left with thinking about her sleeping with these grown men and doing things with them she never even tried with me, the thought of my girlfriend getting immense pleasure while the feeling of naughty kinky and taboo all started to mix together to cause a turn on, I started masturbating to these men 32 and 38 pounding at my 14 year old girlfriend, spreading her legs wide and eating her out at vacant trailers while his wife is at home feeding the kids, I imagined her getting on her knees and taking his cock to the back of her throat until she gags a big wad of spit on his cock, then he pulls her up bends her over and licks her asshole before shoving his wet cock into her pussy and pounding until her legs are trembling, she can't help but moan "daddy" every few seconds as she's being railed against the counter that the kids eat their breakfast on, because they did have sex at his place a few times aswell and all over the house I'm sure. A few of these are true messages aswell as they liked to message eachother about their favorite parts of the fuck session which was very hot to read atleast the second time through, after another week or so I confronted her about the messages, she wouldn't say much and was very dodgy, I asked her if she had swallowed their cum and enjoyed taking their cocks, she said yes and it immediately got Me hard as a rock, I said screw it what else do I have to lose and told her I liked that those men were both pleasing her when I wasn't around and she was slightly bothered by that response, we chatted a few more minutes and went our ways, a few months later we reconnect at the grocery store and she comes over and we bang 1 last time then go our ways, 9 year later now she's married to dif guy and has a kid.