It could be coincidence seeing how you both may be at the place at the same time and then looks your way. Also, your ex will look at you because they were with you at one time and they are just looking at you. It may just mean that - just looking there is not always a reason or deeper meaning.
Because He/She Still Loves You They Hate You Their Talking About You / Thinking Or Your Looking At Them
If you and your ex broke up and he looks rough maybe he is having a hard time with the break up.
the ex girfriend looks different
Like the ex boyfriend? Okay that means she really likes the ex bf.
rexona is the answer the picture looks like an this: ex
anageria
Because you have the looks, charm and the cash to attract her.
you can tell if he looks at you in crowds or he says "he knows who likes you" something like that then yes. It also may depend on who broke up with who.
He likes you. He thinks you think it is funny.
'Ex' means the relationship is over and you should move forward in your life. It shouldn't matter one way or the other how your ex looks at you as you are as free as he is to date others.
see if boy/girl looks at you in a strange way
well,probably that he still likes you and is trying to hint you...
If your boyfriend looks at you in a blank way it could mean that he feels neural about you, or that he's trying to appear that he does.