OK, I've been friends with this girl for about 13 years, been since junior high in class together, but our friendship was on and off, like we would forget about each other and like after some months we would connect and hangout for some weeks and then repeat.

But since high school, there has been like a sexual attraction between us, she would make flirty jokes to me, or touch me close to my dick, or would "accidentally" rub on my penis, so on.

But when we went to college, we were in different cities and we kinda distanced out by a lot, like we didn't talk in about 2-3 years.

about a week ago, she texted me, complimenting me on finishing college. so we decided to grab a drink.

Somehow, even knowing taht she is in a serious relationship for about 3 years now, and I think she has an engagement ring on, I am sexually attracted to her.

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Last week I tried to not give compliments or flirt, but I was really tempted to.

What should I do?