this isnt' really a light 3betting hand pf since, as others have already stated, we don't know how wide the initial raiser is. it also sucks to flat. I don't wana be the nit in the thread but I hate playing fit or fold ever if I can help it.
However, UTG raised only 3x with everyone left to act. If he raised 25 or 30 I would most likely fold but 15 in 2/5
** from UTG is usually just a sweetener such as a suited connector or small to med PP. If this was a small raise in this particular game I would still 3bet.
**assuming this is 2/5 since idk what 500nl means in a live game (as opposed to an online game)