grunch:

Against three betting/calling opponents I think you took the right course. You're probably behind to Aces or a set of 8's (the CO perhaps?). Everyone is not bluffing or drawing to a flush, as the river calls later confirm for you. A large part of your preflop equity was in the fact of being suited, but you're left now with a single pair vs three opponents showing strength. Couple that fact with the knowledge that your hand is the obvious one to beat, would urge me to slow down.