One or the other advice

I like this guy

I've had sexual dreams about him often and get aroused at the idea of him, but in practice we are both virgins and are too nervous to do anything. He likes me back and we have gone on a few dates and have been friends for several years however we dont really get into deep conversations much. He also is super busy and is not able to meet up much. Then theres this girl I like. She loves going the extra mile for me and plans cute dates. She is beautiful and I can talk to her about anything. The problem is is that i havent felt any type or arousal with her. The relationship is still new but I'm concerned that i should be feeling something by now. Idek. They both like me and i like them both but i know i must choose and I'm not sure who. Any advice would help.