Ok so it's weird I have a gf but when I see a pretty girl I start feeling really bad because my brain just starts showing how the future with them would be

I keep seeing random people that are "more" attractive than my gf and it just makes me question everything. I will then go through photos of my gf to validate my relationship. This just sucks. Maybe I am with the wrong person?

When i have this scenario in my head : kissing a girl in my bed , i can image it very much mike i like it and it will come naturally I dont know if i really like it and i dont like that i like the idea Or That i just dont like the idea Also feeling really weird and maybe even sort of disgusted of my bf when i image the same scenario with him, or i feel like i cant image kissing him Wtf is this ?

Lately, I’ve been kind of confused. I’m in a relationship with a person I’ve known for a long time. I also happen to deeply like two famous people I know. It’s like I’m extremely attached to them. All day I think about them. But it’s kind of weird, because I don’t spend all day thinking about my girlfriend. I love her, but it’s like these other two people are on my head all day. It makes me feel insanely horrible for being in a relationship. I feel so myself with thinking about those two, like I’m free from everything. I feel insanely guilty too. To the point it’s been causing depression, and this obsession of needing to know what’s wrong with me for this. It’s like I try to tell myself nothings wrong, but I feel so guilty. I just think about them all day, and not my girlfriend. It concerns me. I’m 15, I just turned 15 yesterday. And I always try to talk too my mom about this, but she always says the same shit. “I was like that at your age” but I’m not trying to say that. But like seriously I’m so confused about myself at this point I don’t even know what too do