<human>: I have been having a crush with my coworker on my team since last April. I never thought of anything except he's hot and super smart. I never expect anything because I'm married and he's 8 years younger than me. Then starting last July, he started to text me and we have been texting almost on a daily basis, so we would IM at work and text when we get home. We would go out to lunch alone sometimes and he's my default lunch buddy, because the rest of the team are workaholics and would rather work through lunch. 

now I feel like he's trying to avoid me. He has stopped texting me and IM'ing me at work. He doesn't ask me to go to lunch anymore and wouldnt make eye contact with me when the team is having lunch together, even I'm pretty much sitting across from him. He would try to make small talks but that's pretty much it. this makes me feel uncomfortable because 1) he's been my lunch buddy for the past year and I feel awkward asking him to go to lunch with me because he doesn't really talk to me anymore 2) I used to ask him a lot when I have questions about work and I feel like I shouldn't ask him anymore.

so even I'm upset about the whole situation, I really don't know what to do because of the awkwardness. I feel like I'm losing a friend. I think we need to maintain a certain level of professionalism so that we can communicate and work like normal. 

so what should I do? should I ask him what he's thinking and not make it more awkward?

Can you condense the text into a few key points?
<bot>: coworker that I'm having a huge crush on is shutting me out/drifting away and I don't know what to do.