Interested in another girl but couldn't see being sexual with girls, am fully interested in guys, thoughts?

Explore your own sexuality at your own pace. Keep an open mind, but don't rush into things headfirst! What's important when exploring or experimenting with yourself is to always stay safe and comfortable during the journey. You also don't have to be sexual with girls even if you are interested in them! Attraction has many facets including aesthetic, sexual and romantic. You can date someone without having sex with them, you can have sex with someone without dating them, etc. Relationships are as fluid and customisable as sexuality. As long as you and all people involved are consenting, safe and comfortable, everything is chill and you're encouraged to explore yourself!

If your interest in this girl is emotional/romantic, it could be that you are biromantic and heterosexual - the divergence between the two kinds of orientation sometimes happens, and that's perfectly normal!