I am 20 yo and my boyfriend just turned 40. He has 1 son that lives with him and another in a special home along with a full-time job. We have both agreed that it's best that I stay home and be a step parent to his 13 yo son. We have been together for almost a year now and the sex just isn't there. When we first started again, because we dated in the past but he couldn't handle a long distance relationship, and moved in together the sex was great but after a month it went down hill. We only do it once every 2-3 months and I'm always the one who has to start it. Is there anything I can do to gain the interest of my man again?