Why was this so embarrassing with him?

[Anonymous]

I work with this guy and when I first met him he seemed kind of standoffish but eventually we started talking a little more. We would have shifts where we both would talk to each other a lot. Our first convo we talked about how we’re both in college and our majors and he told me that i spoke very well so I’d be good at my major. He also told me he was going to a pizza place after work and asked me if I had any suggestions and what my favorite kind was. I told him and the next day we had the same shift and he said he felt like he was having deja vu because we were there the day before. He told me got his pizza. Honestly sometimes I do feel a vibe. I have a boyfriend and he knows. When I told him, he asked us where we go on our dates to eat. sometimes I’ll call him during work. Whenever I do, he’ll linger but maybe I’m overthinking. We don’t have time to talk mostly but a lot of times I’ll look up and see we’ll lock eyes from across the store. Also he always plays with his hair around me and sometimes has a hard time maintaining eye contact. a coworker at work told me that him and another coworker have been secretly dating for a really long time now since before I got here. I heard it was private but everyone knows and He never mentioned it to me while we talked. Today I was going into the bathroom and I walked in and saw him fixing his hair. It was soo awkward so I walked back out. I think I made a bigger deal than it was but I just didn’t expect it. I told another coworker because I was flustered and he came next to me and I apologized and he was blushing hard and straight faced and was like “i wasn’t doing anything otherwise I would’ve locked the door” I don't know he seemed kind of upset but it was an awkward situation. Did I ruin the smooth sailing with us?

[SiberFox]

Thats a lot to unload, also section the different points into paragraphs it makes it easier to read.
You said you have a boyfriend and that he's also in a relationship (albeit secret), you really shouldn't be messing with this, even if he's interested in you. If thats the case though talk to him and figure things out and break-up with your boyfriend. But as to your question, I don't think you ruined anything, he was just surprised to have you walk-in on him in the bathroom.

[Asker]

do you think I or him are giving off flirty vibes though? I wouldn’t want it to seem that way

[SiberFox]

Maybe, but I would think so since you're asking the question probably means it was a little. I think that you are overthinking it.