Is She With Me Because I Look Like Her?

Hello dear readers. I thought for a long time whether to share, but now I decided. I've been with him for almost two years. We experienced a lot, parted for a while, and got back together. At first, he didn't me. he allowed it to himself, but over time I think I changed it for the better. Maybe I was and am more emotional and mature in our relationship and I think about things more. I've been seeing a big change in him lately and I'm happy about that. My problem is that I'm crazy jealous. I've just had low self-esteem since school. Not that I don't like myself, on the contrary, I think I'm nice, but I constantly compare myself with others. If you see someone beautiful and well-groomed, I immediately think, what if he sees her if he will like her. And when I'm with him I just have no words. In general, each is like a threat, not because I can't live without it, the problem is entirely personal. And especially his ex.

I found out about her at the beginning of our relationship, I saw her by chance on social networks. Well, the first thing I thought was, we look alike. Big brown eyes, light cheeks with tingles, a crooked tooth, in general, there is a resemblance. To this day, I can't get it out of my head that he's caught up with me because I look like her. Earlier, he had written a mocking comment on a photo of her with a friend. We argued, he said it was just like that, I know it wasn't like that, but I swallowed it and I wrote to an ex with whom we have a good relationship. But still I do not stop remembering and tormented. I'm not sure about myself. I went to extremes when I was jealous of my older sister, that I raised a scandal with him, I just felt that he liked her. Do you think I'm sick? How to fight with me I do not know but I know that with whomever I am I will always be jealous and compare myself with those more beautiful than me. This is my confession, I have not shared it with anyone, because they would think I was crazy. I hope to get advice and opinions