Do you think she likes me?

I'm a senior, she's a junior and we have worked together since summer.

She's been single for a few months, and she always randomly hugs me and puts her head on my chest. She's smacked my *** a few times too, haha.

Anyways, the other day at work she was sitting down and all the seats were taken and she motioned me to sit on her lap, but I said I'd rather have her sit on my lap and she said no. I think she thought that I really wanted her to sir on my lap, so an hour later when I'm sitting down at another location she randomly appears and sits on my lap with her arms around and me and puts her head on my chest. She then asked me if I'd eat with her (we work in a restuarant) after work and I said yes but it didn't happen cause we didn't have time.

We tell eachother we love one another every now and then and I even kiss her on the head/forehead sometimes.

She hugs other coworkers sometimes but she doesn't do the stuff we do.

I really like her but I'm not sure if she likes me. She shows it sometimes then other times she doesn't. What do you think? What should I do?