Normal. Totally. As a matter of fact the only reason you have gone this long without noticing all the sexy guys out there is temporary love blindness. So, that is wearing off and you are coming back to your senses.
That doesn't mean there aren't things to work out here.
You aren't getting what you want sexually? Again, that happens all the time and even when fixed, the issue will pop up again in any long-term relationship. That's what a long-term relationship is - maintaining a bond while both people evolve and get knocked around by life.
Relationships aren't primarily what you feel (although that is there), but what you do. Good relationships are the reward for finding a way to talk about the ugly bad stuff you are feeling without cutting down your partner.
In that light, the sex issue is a gift; an opportunity. Now you have a touchy issue to work out together. How you handle this can set a pattern for how you work through even tougher problems in the future. So, it's like working out: You are tapping in to new muscles and exercising them a little at a time so they will be ready when you need them later.
You know yourself and are the expert on that topic, so I certainly wouldn't presume to tell you what to do. But I will give you a few tips on talking about difficult topics like sex with your partner.
- When you talk, concentrate on communicating what you feel. No one can argue with what you are feeling.
- The flip side of that is what not to do: don't attack or blame your partner. Don't list what he is doing wrong; don't accuse or blame his actions. Placing blame closes doors; people get defensive and stop listening, or worse start attacking you back. Owning what you feel opens dialog.
- When you make yourself vulnerable, it triggers the nurturing instinct in your partner. Walls come down and it creates a safe space for your partner to be vulnerable himself. It's the opposite of what we want to do when we are hurt or threatened, which is to pull back and get defensive - or maybe even throw a few verbal grenades at the other party.
This doesn't guarantee a relationship will succeed, but I
can guarantee that if you ignore issues, or try the attack/blame strategy the affair is doomed.
And if you find out that you are heading in different directions, then the skills you developed here will serve you with the lover you stay with for years in the future.