UTGH minopens tons and is his standard 31/19. SB is a nit. hows my line? prob shud fold pre?

$0.5/$1 No Limit Holdem
6 players
Converted at weaktight.com

Stacks:
UTG pitn ($209.78)
UTG+1 steef_79 ($92.88)
CO chippej ($95.03)
BTN Challe50 ($82.73)
SB givmild ($112.56)
BB Hero ($133.61)

Pre-flop: ($1.50, 6 players) Hero is BB
pitn raises to $2, 3 folds, givmild raises to $8, Hero calls $7, pitn folds

Flop: ($18, 2 players)
givmild bets $15, Hero calls $15

Turn: ($48, 2 players)
givmild checks, Hero checks

River: ($48, 2 players)
givmild bets $25, $25 to Hero ($110.61)?