Search Results: extra attention to a girl he likes

So long story short, a coworker and myself started messing around with each other late last year. Then come to find out, he started talking to another girl, and decided to leave his wife to date/move in with her and another one of our coworkers. Things did not go well, and they split within less than a month. (Other coworkers told me that she decided she wanted someone else.) We were also not talking to each other at this point in time. (He also stopped talking to a male co-worker of mine as well, perhaps jealousy?) And then all of a sudden, after some time of not talking, he makes the effort to come bump me on my elbow while I was talking to other co-workers up front at our cashier area. I blew him off, and keep blowing him off, but he just keeps making the extra effort to get my attention, (This is my second job, and I am only at this job every other weekend.) for example, he makes it a point to come over where I am and/or just bother me when I am nearby, talking to me specifically and ignoring the other people around me. (He does not make this effort to talk to the male coworker aforementioned.)
Other coworkers have noticed this as well.
He called me out twice to another coworker after I completely passed him by, ignoring his comment about ignoring him. He’s giving me mixed signals, and I have an idea of what he could possibly want, but I need other opinions.

P. S: Sorry about the long story. 😅