Asking for advice

So I (female) have been with my girlfriend for 4 months. But recently, I've had a weird feeling about it. I don't know if I love her or not. I know it is a little early to think about that but I really don't know. Another problem is that I have a guy best friend and I've liked him for years on and off. These feelings have flared up again and I don't know what to do.

This is the healthiest relationship I have ever been in. I do tend to self-destruct and I was curious if that is why I have been feeling this way. She is the sweetest and most respectful person. I think she deserves better. I don't know if I can break up with her though. She is very attached and I don't want to hurt her.

Every time me and my girlfriend hang out, I feel a connection. But when we aren't together, it just feels fake on my end. I don't want to put her through that. On the other hand, whenever I am with my guy best friend or even when we aren't together I think about him. Whereas I don't think about her. It could be an adhd thing.

I hope this reaches the right people.