Couple of months ago, my boyfriend broke up with me. He wasn’t a good person so i moved on surprisingly quick. Breaking up with him meant as well that i could unblock everybody i blocked for him (exs, friends, random people, etc) And one of them was my best friend and ex. We dated years before i dated this last ex, so i thought we both were over each other. We chose to stay as best friends after our break up, since we wanted to keep each other in each others life, but this last ex made me block him. I unblocked him, and we gained contact again after this last ex broke up with me. We were again best friends like if nothing had ever happened. He invited me over one day and things took a wild turn. (so we agreed to be fwb) Fast forward to today, he invited me over, which isn’t weird. And when we are doing our thing i let a “i love you” out. He stops, looks at me and says he loves me to (which caught me off guard since i thought he wouldn’t think much of it and would just continue). I told him it was a mistake but then he ignored me and kept going. I thought that when he finished he’d want to talk about it but after that he didn’t mention it at all while i was at his place. Later today while going home he calls me and goes on about how much he loves me and how he knew i was going to come back. And even after i told him i didn’t mean it and that it just slipped out, he won’t stop texting me and calling me.

TLDR: Turned my bestfriend who’s also my ex into my Fwb, accidentally said i love you mid sx and now he’s saying he is in love with me. (i’m not in love with him)