we've been together for 4 years ...for the first 2 year his libido was so high we would probably do it like 3 times a day but thats only because he would spend so much time begging me or just trying to get my clothes off....it started dimishing thereafter...to once a day than two days...now our sex life is almost non existing.....he's never been able to last long either...it's always 1 or two minutes....we have a pretty open relationship.....i know masturbation and watching porn for guys is normal so I don't trip about it and he knows it....but he doesnt even watch porn anymore either....i check the history and he doesnt know anything about checkin or deleting it...not very computer savvy...i know he's not cheating on me either...and i think he feels a little embarrassed that his sex drive is so low.....my sex drive is not so high either...so i feels like there's a problem....i miss that physical intimacy connection....and i do initiate it sometimes but i dont want to do it if he's not into it......What can i do? is there anything medically wrong with him?