[fisherman112]

if i tallied everything up right, villain has about 180 left and the pot is about 160, so his push isnt an overbet.
tptk against an unknown in a 3 handed game should be calling pot sized bets. he has shown strength nowhere in the hand and pounced on your weakness, seems like you got exactly what you wanted to happen. he might showdown a 7 once and a while, but it's an odd way to play it since it looks like you got scared when he called the turn. he's not putting you on anything as strong as your holding. easy call.