Me and my boyfriend (m19) have been going out for about 5 months and when we first started talking I found out this is his first irl relationship. I’m 20 yrs old and have been in three relationships all irl for context. Some days we would be having a normal conversation ab experiences or something then mentions something ab his ex which is his first gf he met online. Today we were talking about vacations and he mentioned the time we went to go visit his ex and how he rented a hotel for the two of them. He mentioned how he paid an extra night bc his gf at the time was still sleep past check out idk what it was but the image of this has just crushed me. The thought that he didn’t care ab paying for an extra night crushes me and had me wondering all day “would he do that for me?” This was his first love and it’s not like this is the first time he mentioned her, it’s happened multiple times. We were out shopping and he was looking for something in his camera roll and found a picture of his ex and asked me if I wanted to see how she looks. I feel like I’m just overthinking and being insecure but he mentions her often in normal conversations. I’ve always had the ideology not to mention exs unless it’s relevant to one’s insecurities or worries but ofc you can have mature conversations about past relationships, for this though he just mentions her and how similar we are often 🙁 I feel like he’s just dating me because he can’t have her anymore. The thought that he drove over 12 hrs to see her and risked getting in trouble with his strict parents for her makes me sick and I’ve never been like this in the past I’m scared I’m just a replacement. We’ve talked ab what this relationship means to us and how it’s nothing casual we both want something serious and meaningful, besides all of that he’s been picture perfect or maybe I’m just trying to excuse it but idk what to do 🙁 I know we r both young and this is stuipdly silly