Hey, my boyfriend and I have been together 4 years. There is a big difference in our ages, he is 38 and I am 23. My problem is, I used to enjoy sex quite often, nowadays I don't as much. We run a business together and it can be very stressful. When we do have sex it's like let's hurry up and finish not passionate at all. Is that what happens when you are together for a long time or is it his age causing his libido to decrease? The only other long relationship I had was a 2 year relationship but this guy was my age. What do you think?