[?] [?] Dream about sex with friends girlfriend, what does this mean :s :/ [?] [?]

I had a dream one of my (good) friends girlfriend was flirting with me, and then we proceeded to have sex.
The night in the dream was very similar to one I had lived a few days ago, but the flirting and sex part didnt happen. I just got very drunk with her, her boyfriend and a few other mates.

The only part I can remember about the dream is hugging her, telling her to never leave me and to "grow old with me", then she said something that I found cute (I dont know what), when she said 'it' I suddenly really wanted her like, there and then, so we went onto the floor and had sex.

Ive known them both for a long time (her and the boyfriend), I've never had any sexual thoughts or feelings about her before unless I was very drunk, I do find her attractive sober but I only think about ever having sex with her if I've been drinking, I've never had any strong love feelings for her at all, drunk or not, as they are both good friends and I only see her as that.

I havent felt any love feelings after the dream, but I do feel a super lot more attracted to her, but I still couldnt do anything at all without being drunk, even if she wanted to. My heart is with someone different who I really love but sadly arent with:L They know how I feel and I cant get over them, but thats a different story. I just cant think why I had a dream about her (not the one I love sadly) and can only remember the moments before and the sex part with her. I woke up after, confused and more worried than aroused.

I'm 17 (male) and not sexually active, I cant talk about it to anyone else as all my friends pretty much know her and I dont want it to make things awkward between me and her:L

Its also one of the only dreams I'm able to remember after waking up fully

Is it really bad I dreamt I'd slept with her or not? and why would I dream that? :s

It's normal and natural to be sexually attracted to other people, even if you're not emotionally attracted to them.

it's not a big deal. you seem to be confused, but you'll figure things out.