So here's the thing... Maybe I'm making this out to be a bigger problem than it really is. Also the fact that I am new to these emotions; I have never felt this way about anyone before. I was told through a coworker that this guy at my work liked me (long before I got feelings for him). Since we work together, he's always shown hints and tries to get me to notice him more. We are more like acquaintances though; we don't really know each other that well. He tried to talk to me some months ago, asking about something simple like school. Except this was when I was in a relationship with someone else, and I thought I shouldn't even talk to him at all (I was worried what my past bf would think). So I was fighting my feelings for this new guy, which made me a bit cold to him. I feel regret for ignoring him and for behaving this way. This is because, over time my feelings have grown and I realize I can no longer hide them. (I am no longer in the past relationship, but my ex is still very clingy).
I feel like I should make some kind of move or at least drop hints to this new guy, but I'm not sure what is the best way. I also feel bad for kind of rejecting him before, so that's also holding me back from doing anything now. I know since we work together it should be easy to flirt, but the thing is that we don't work together that often (like 1-2 days a week) and in different departments. But I'm thinking about him constantly every day. It's hard to focus on other things. He's on my mind when I fall asleep and first thing in the morning. And I'm also imagining scenarios that I wish could happen with us. I'm very uncomfortable in that feeling of not knowing what will happen. It gets me thinking maybe I shouldn't just rely on seeing him at work. And I always feel disappointed if he doesn't show up one day, like something's missing. Should I try reaching out in another way? But I just worry that it would look stalkerish if I followed/messaged him on social media, even though he still obviously likes me. I'm always worried because my ex isn't over me and might be stalking me. I feel like I still care too much for my ex's feelings even though there's someone else in my heart right now. With the new guy, I honestly just want to come out and tell him how I feel. But maybe I should just try to get to know him better first? I just know it's not emotionally healthy to bottle up my feelings anymore. What should I do?