Sitting in MP with 78s one limper early I limp both blinds enter, pot is 4BB.

Flop 2h JTs

Early limper (TAG) puts in a pot sized raise...... your call

Other information.

Level is 2/2 NL, both blinds are average players. If a third spade hits the TAG will not pay off unless he's actually sitting on higher spades which will be me paying off. My read is good enough to say he is most likely on JT, AJ, AT, KQs, AQs, with a lower probability of JJ, TT, 89 or even less probability that he is bluffing a lower pp.