We are both 20 year old students who spend most of our time in class and at work. I'm pretty sure our relationship status is good because she seems to bring up the future quite a bit - having a family, a house, etc. Both generally pretty "lovey dovey" towards each other.
The thing is, she never wants sex anymore. Whenever I come onto her she says that she is tired, which she may very well be with all of the work and school. However, I would like sex sometimes... I think that it's an important aspect of relationships. Lately she has been a little stressed and this might be another contribution to the no sex. I don't think that she is cheating on me.
How can I get the spark back? Is she just not sexually attracted to me anymore or is it just all the busyness and stress?