Forced Anal Sex

I'm after some opinions, so I'm 19, 5 foot 8 and very small build with a small cock. It's not uncommon for me to frequent the popular gay cruising spots but one time in particular worries me.

I went to one spot a few months back and there was two older guys already there playing around so I went into a toilet cubicle to which they then asked me if I wanted to join, I was horny so I didn't hesitate, time went by jerking, sucking etc than one of the guys asked if he could have sex with me while the other guy sucked me off, I agreed on the word that he would be very gentle.

He was quite big and it was a little painful, he was about a minute in and I was struggling with the size, I asked him to please stop but he refused as he said it felt so good for him. Two big guys and me a little weakling, I was a bit scared and very overpowered, it kept going for another couple of minutes, all the while asking him to stop cause it hurts, but this is the weird part, with one guy sucking me and the dick in my arse, I ended up cumming in his mouth and than the guy cumming in me.

Is it weird to cum while in pain and not enjoying myself and wanting it to stop, or is this some crazy fetish I wasn't aware of where I subconsciously enjoyed it, looking back now I get a little excited thinking about it but wasn't at the time.