WIBTAH if I dated my ex "situationships" brother?
I (20F) was dating Chris (19M) (all fake names) for about 4 months, we never made it official but we were exclusively seeing eachother. This was both of our first time really dating anyone so things were of course awkward in the start but everything felt very sweet and innocent still. eventually he stopped putting in any real effort and I started noticing he would never ask me on dates or open doors for me just little things like that. Even though I knew it wasn't that big of a deal it still bothered me alot since I would always do a lot of romantic things for him, (like surprising him with little gifts or letters) yet I wouldn't get it in return. I would bring it up and he would be completely understanding saying I deserved all that I was asking for if not more, he would promise he'd put in more effort but no matter how many times he would promise it never changed. We were eachothers first kiss, first date, first everything, and we had said I love you even if it was too fast it just felt right in the moment as I really believed I loved him.
Eventually after me begging for the bare minimum and him always saying i deserved better we ended up breaking up, I've been hurt worse before but this was the first time I had given so much of my heart to someone and gotten hurt. I had started a new job around the time of our breakup and his brother Leo (17M) happened to work there, I absolutely thought Leo was going to be pretty awkward around me since I'm his brothers ex but he is incredibly friendly and is always talking to me. After working there for a bit I realized he doesn't really talk to our other coworkers nearly as much but he's still super friendly to them and a hard worker.
For a bit of context I had never met anyone in Chris's family before starting my new job, they all knew of me and apparently all really wanted to meet me as I was the first girl Chris had ever dated and I would give him small gifts to give to his mother and sister but they never saw what I looked like or spoke with me.
Chris would always bring up how me and Leo should become friends as we are both good people and we would get along great and we have become very good friends. We added eachother online and speak everyday even on our days off and we time our breaks so we can hangout a bit more. Leo is always smiling, he's really funny and laughs at my stupid jokes, anytime I don't feel good he always gets really concerned and is super empathetic and understanding, all around just very kind to everyone. Honestly it's sort of refreshing to not feel like I have to parent someone and beg for basic maturity...
I know that I'm not ready to be in another relationship just yet because I still feel a sinking feeling when I think of Chris, not in an "I miss him" way but just a solemn gut feeling. Another big reason is Leo is 17 and even though I know 20 and 17 isnt technically a crazy age gap especially since he's in college it still just feels icky. He's also just getting out of a relationship so I wouldn't want to rush that for his sake.
So many of our coworkers ship us lol, I dont think he's aware of it since from what I know they've just brought it up directly to me but it's a bit validating knowing it's not all in my head how he completely lights up when he sees me and always tries standing next to me. His native language isn't english and one of our coworkers who also speak his language was teaching me a bit of it and when Leo walked in the room I could feel a tiny bit of jealousy from him. Of course that could just be in my head so I brought it up over text jokingly and he said "haha you noticed that?" so clearly there's something I just dont want to be an asshole by dating my exes brother like what would his family or our friends think... I'm so worried I'm being an idiot and maybe I should just distance myself from all of this idk I'm so new to people liking me back lol any advice is really appreciated 🙏🙏
Edit: I feel like i need to make clear I would not date him anytime soon so we can both heal separately from our breakups and because I would not date a minor💀 im just asking if things were to develop in the future would that be wrong? personally I feel weird about dating my "exs" brother i just needed an outside opinion because ive never been in something like this lol