As a married guy I can say it aint easy sometimes. Women want so much & to even know when to do what is even more confusing.
I just do whatever I can to keep the relationship fresh & to make it like it was the first time we got together.
I may be laying on the couch in the middle of a movie or at my pc playing a game & either one of us may get up & say, "let's go do it now" or just take one another. Wether whoever is in the mood or not, you gotta put forth your best effort.
I have done alot of surprises, bought diamonds, roses & whatever. The best gifts my woman has liked were the ones that I actually went out & searched for, like some old movie she liked, you know, to show that you actually listened to her. (sometimes very hard to do)
Thank gawd me & my woman have pcs, games & music in common. Anyway, good luck!