Are me and my girlfriend having too much sx? (lesbian)?

Me and my girlfriend were in a long distance relationship, she is from NY and I'm from IN. She is staying with me for a few weeks cause we are both on Summer Break.. she is 17 and I'm 14. The first night we met in person, we had sx. For hours. And, it wasn't my first time cause I'm kind of... experienced for my age. (don't judge) And every day we do stuff together, go out to eat, go shopping, go to the park, etc. But as soon as we get home, it feels like bam. H**ny as hell, and is it cause we have pent up frustration from wanting each other for 3 months? (how long we have been together) or what? I love her and the sex but, is it too much? Also, we just started using 'toys'.. I only use the strap with her tho, I wont have it used on me. She is bi and I'm fully gay, is it bad that she loves the strap on? And last question, she came with her dad and he is doing business stuff... she wants me to meet him but, I guess I'm nervous. Is our relationship too serious?