Is this a weird way to start a relationship?

So i am posting this after thinking about it for what seems like weeks and I just don’t know what to do anymore. I need you’re guys’ opinions to see if I’m overreacting, under reacting, or reacting normally. Please be nice I’m more confused then anything 😂

So I met this guy and we kind of hit it off. We never made anything official but we hung out and “dated” a lot. We ended up taking a break but we were hanging out one day and Well we ended up “hooking up” I guess if that’s what you wanna call it (which was a really wonderful time for me) and i got the impression we would try for real this time (making it official). Well literally two days later after we did that he messaged me and told me he had a thing for another girl. Said he had feelings for her. He said he loved me but he also was crushing on her and she I guess liked him back.

He told me that they weren’t going to right at that moment but that he would maybe date her down the line. He was gonna Walk away from me and choose her. He told me if me and him never met they would’ve been dating. He then saw some post on her Snapchat and decided she wasn’t for him. It felt like after that then I became an option. After working through a lot we decided to date again. I asked if I was a second option and he said no.

Skip to roughly eight months later and we are still dealing with this. I am struggling with whether I should leave 100% or to stay. He is a really good guy, take out this girl and I would be super happy.

He has set up some boundaries because he knows how I feel about the whole thing but how would you feel if they were around each other? Is this a weird situation or am I overthinking it? I just feel extremely weird and awkward knowing that he thought she was super pretty and was super into her and that I should be comfortable Around her. Just some background text, send pics to each other on Snapchat, have common best friends, FaceTime, run into each other at the gym, they’re still talking and stuff.

So I don’t know if that’s weird to be around that or if I’m overreacting. Writing this I feel like I’m overreacting but at the same time I feel like I shouldn’t have to put up with it as well. What would you do?

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