Has anyone else been in this situation?

My ex and I have been talking about getting back together. We broke up because I moved away but I’m moving back and he’s been really excited about it. He’s been dating someone else but said that he would kick her out when I move in. He said he didn’t want to live alone because he has seizures and whatever. He told me not to be jealous but I wanted to see what others thought about this.

And before anyone asks yes he really does have epilepsy and he’s been talking about doing this since before I told him I was moving back. I have thought about the other girl’s feelings and honestly she deserves someone who will love her wholeheartedly and not someone who’s thinking about being with someone else. That being said I believe that he will have her move out when I’m back but I can’t help but feel jealous about the fact that she gets to see him everyday and gets to spend more time with him than I do.