Recently I have just got into a new relationship, it’s 3 months in and I’m already so in love with him, and couldn’t picture my life with anyone else. He treats me perfectly and we haven’t really had any problems yet, but lately I’ve been thinking about my ex and I don’t know why. My ex and I never made it to getting into an actual relationship because there were always things that went wrong, but we were always on and off for about two years. We are still friends, as we go to the same college, as well as my current boyfriend. We sometimes message each other as friends, which my boyfriend knows about and has no issue. But recently all 3 of us went to the same party, all night my ex was making little digs at both me and my boyfriend, but we took it as banter and just left it. Further into the night, my ex came and sat next to me and my friend, we were all engaged in a conversation and I noticed I had my hand on his leg, as soon as I realised what I was doing I took my hand away.
I don’t know why I did this and I am really confused because I know I’m in love with my boyfriend, I know I don’t have feelings for my ex but it still feels like there is something there. I have told my boyfriend all of this because I like to be as truthful as I can, I really don’t know what to do. I don’t want to end things with my boyfriend because I am so happy, but I need to lose whatever attachment I still have to my ex, any advice would be highly appreciated, thanks.