Don't listen to SHH! she is probably a virgin and never experienced sex herself. Read my story in Love Stories ( Marriage to two women ). I have a similar experience and understand what you are going through. You are not lusting but truly love this girl. Girls married at 15 in the middle ages, so why can't they love an older man today. The law prohibits this from occuring. Speak to her parents you will find them understanding to you. I am sure your feelings for her are geniuine. You are a normal, healthy man. Don't listen to others on this Forum. You don't need a shrink, but sound advice from those who are more understanding and less critical. I love my wife, I also love my MIL together we are happy living together. No one can understand . Good luck