My Daughter’s Boyfriend

Let me be upfront as you know what I did from my confession title. I am not proud nor can I justify my behaviour though I do want to tell my story.
My daughter and her boyfriend have been together for five years since their late teens, and he has always treated her with respect. He has spent lots of time in my house and we too had a good relationship.
I divorced my daughters father about the time they got together and to a certain degree he restored my faith there were good men out there by the way he cared and loved her.
About six months ago she said to me she felt that having got together so young she felt she had missed out on dating other guys. I told her to be careful what she wished for because she already had one of the good ones.
However a couple of weeks later she told me she had broken up with him and thought he was upset he understood. I wasn’t convinced it was quite that amicable but she is my daughter, I love her and was supportive and as I expected she quickly started going out on dates with different guys.
Her now ex dropped around the house about four weeks later, to say hello he said but I guess really check how she was doing and if she had voiced to me any regrets. I had to tell h that she may have some but hadn’t said so to me.
He got quite emotional and I ended up giving him a hug, telling him he was a great guy and I thought she was mad to let him go. He leaned back, looked me straight in the eye and said do you truly mean that. I nodded as I felt his mood change and he very softly kissed my lips. For a second we just looked into each others eyes before he kissed me again and I found myself respond, opening my mouth and feeling the kiss deepen.
I could feel his quickly hardening erection and his hand moved from my back, around my hip and upwards to cup my breast beneath my top. If she doesn’t want me then I’m single to do whatever he whispered….. and right now I want you.
It was wrong, I knew it was but right then this sweet, attractive guy wanted me and it had been so long that I could feel my arousal as a living thing, my pussy on fire and my obviously hard nipples as his fingers rubbed them.
We kissed long and hard as he repeated himself and as I pulled back out of his arms I could see his disappointment and slight confusion. As well as my arousal my affection for him broke the final barrier and my hand moved to his belt. As I undid the buckle I told him the bed will be better.
The first time was fast, frantic and both of us came hard quickly, the second was slower more tender and he looked to my needs whilst complimenting my body and telling me how attractive I was. We didn’t mention my daughter once until later I kissed him goodbye and said he didn’t need to be a stranger.
We have spoken since but not repeated it. I think we both know it was a one time thing but I get even angrier thinking about how my daughter let this guy go