My coworker is in a long term relationship but keeps paying me compliments. The other day he said he really likes my skirt and i look like a princess. Other times he compliments my leggings etc is he just trying to be nice or flirting with me?
I also notice he keeps staring me in the eyes for too long even when we're not talking and touches me when i'm walking close to him.
What Guys Said
His complementing your dress sense can be ordinary interpersonal interaction. I will compliment someone at work who's looking particularly nice, or even looking espcially unusual and its not got flirting aspect (will do that with guys and girls and its something to watch for with him).
Regarding holding eye contact for too long; It depends on the person. Some people don't have a sense of staring, came across that with a friend of a friend who keeps staring uncomfortably at everyone! So, whilst that might indicate interest it doesn't necessarily. The last one, keeping touching you, is more concerning. Some people ARE just more 'touchy' than others and it doesn't mean anything much for some people, a friend of mine from Indonisia was always laying his hands on my shoulder when he made jokes etc. So it can be innocent enough (and he was happily married, he just did it naturally as part of commuication).
My advice here is that it really is down to you and how you're feeling about these interactions (regardless of how he is intenteding them). Either your fine with them, or its making you uncomfortable. If its making you uncomfortable you need to push back, and establish your boundaries with this guy. Push his hands away, and if you have to do that more than a couple of times without him getting hint, be more forceful and tell him to his face that if he touches you again there will be problems. If he doesn't take your verbal telling seriously, next telling mention "you're going to have to make this a HR incident" if this doesn't stop NOW.
I sympathise here, these are difficult things, sometimes people are just really open friendly people. Brazilians are typically like that but they have the way of making everyone feel comfortable with that.
Consider if your asking this because you like him, best to be honest with yourself there if you do. If you have a personal attraction interest it changes how you should manage it.