3 way FD

[Bruce D]

In the bb with 2 suited. SB and BTN are in the hand.

Flop comes 2 of my suit, one over card and a paired board. SB bets. I call since a raise, if I knock out BTN would no longer be for value.

BTN 2-bets, SB insta-3 bets, I call for same reasons above. BTN makes it 4.

Turn does not improve my hand and the SB bets.

If I know the BTN will only call, this is a clear call. However, this is not always the case in this situation. Many times these two guys will get into a pissing match on the turn. The action from the SB screams "I have a minimum of trips, perhaps a boat." The action from the BTN could mean the same thing, PLUS a FD.

Players are aggressive, but not stupid.

What are your considerations?

If we knew this was getting capped on the turn, is a fold correct?