No don't let it stress you so bad. Maybe just trying surprising him with a naughty nighty - if your crazy side comes out maybe it'll bring his out! =0)

IMO, I wouldn't worry about it. You're on the look out and he isn't acting like a cheater plus you asked him and it sounds like you believed him. Things do change as relationships progress. The love grows deeper and generally the sex is less often. But if you're still in love and you think he is too...I wouldn't worry about it.

No, relationships go through phases.

Next phase will be you completely lose interest, and then you'll be glad that it hardly ever happens. On the rare occasions when he does want it, it will feel like a chore for you. Welcome to the downward phase!

Don't worry. It is common after 2 years and happens to most couples. Sometimes it's just familiarity so the passion and excitement are less. Sex with one person, just like marriage to one person isn't fairybook style. That comes after 40 years when you realize you still love him that much. Between now and then you must regularly "work" at it to keep the excitement in it. Being a guy I can give you some ideas from my perspective. When you go out to dinner, movies, dancing, wherever...after you are there, tell him you aren't wearing any panties (and don't wear any or take them off in the local restroom. That will drive him nuts until you get home. When he comes home, answer the door naked. Wear a really short miniskirt around the house with nothing under it and bend over a lot. Visit your local porn shop and just look or rent a movie or buy something. Write each other notes about your deepest fantasies. Go to strip clubs, both male and female ones, together. Never alone. Be creative and have fun. He can ask some of your girlfriends for ideas. Invite a close, trusted friend(s) to join you in bed.