AToff in HU-situation

[Guest]

6 SPIELER NOIQ poker 15.52008 0,50/1$
DEAD MONEY SB/BB
robix raises from seat 6>>>>>>>>>> agressiver , looser playa
Volpip34/PRF 25/2,4/ 45WSD

hero (cold)calls from seat 1 with
4folds

flop:
robixman bets 0,50
hero raises 1$
robix raises 1,50
hero raises 2$
robixman calls 0,50

Turn: [ ]
robixman checks
hero checks behind
River: [ ]
robix checks
hero bets 1$
robixman calls 1$
pot 8BB