What can I do about my feelings for my coworker?

[Anonymous]

I’ve had a massive crush on my coworker since he started about a year ago. I feel like I’ve always been very good at hiding it and I don’t think he’s been all that suspicious of how I feel about him. However, recently (like within the last week), we’ve gotten a lot closer and he’s been saying flirtier things than he’s ever said around me or about me.
I think my feelings towards him are misinterpreting how I’m perceiving his friendship and I believe I am overthinking it wildly.
HOWEVER.. I do have a theory.. I think maybe he’s caught on to how I feel and is testing the waters to figure out if I have a crush on him and is acting this way..

again, not sure if he’s just being way way more friendly or is also developing a crush on me. I’m not the most attractive female and am not the skinniest (but I DO know I’m his type from all of our in-depth conversations)…
feeling confused and just want to see if I should continue to have these feelings (which doesn’t bother me) or if I should at least try to move on

[Avicenna]

Give him more and clearer hints (like compliments), but be sure you're OK with dating a co-worker before going all-in..

[Guy13]

It sounds like he’s trying to get some feedback if he reflects your behavior back to you.

[TenkRealist]

Well if you like him, give him a sign and see if he bites.

[Iron_Man]

Ask him out already