1. not to attack u here, but loose call is an understatement. I assume you know this as you try to dismiss this "not too worried about this" If i made that call, i probably wouldn't sleep for a week. But lets say you found yourself in this situation, by accident. Maybe hit the call instead of fold button.
2. what to do? put our opp on hand first, being under gun and having no other information, Id only put him on top hands AA KK QQ AKs AKo.
What does a pot size bet on the flop mean? He still likes his hand.
What are my pot odds
? 2 to 1
How many outs do I have? 9(flush) for sure, 2(8s) more if our opp didnt just hit top set, 3(As) more if opp didnt have pocket rockets. And none needed if he strait continuation bet with AKs/o. All in all id put it at 11 outs, discounting 1 out on the 8s and 2 on the As.
So with 11 outs, to call would be a wrong as you need 3.2 to 1, especially if you believe another spade will kill the action and your opp will fold to any bet.
The other option to raise, with the nut flush draw, trip draw, and two pair draw.
First what will my opp do if i reraise?
if he has AA KK QQ = I expect him to shove.
if he has AKs/o= I expect him to fold.
So reraising is out of the question, based on the hand range i believe him to be on. Now the reason why? My opp has told me twice he likes his hand. The reraise all in would give me exacly what i need to call for two cards to come with 11 outs 1.4 to 1, so an even money proposition, so to fold woldnt be wrong either. (pot 12.20/8.50what you have left=1.4)Another reason, i dont like calling as even money, as much as i like pushing even money, as i have fold equity on my side. Also if he has AK your a huge favorite, as you only have to dodge a K thats not a spade, and runner runner strait with out a spade-so your only forcing a fold to a hand youll beat by the river anyways.
What about a push? 10.50 to win 1.70, seems kind of steep, and 41% of time your called youll end up winning, so 41% time youll win 11.00, 59% of time youll loose 10.50, and if your opp folds youll win 1.70-which id say would happen about 10% of the time.
All in all id call hope for an 8 and pray he didnt boat, or if spade came hope my opp would loose his head with an overpair.
3. to call the shove NO as discussed earlier, even money with my opp doing the asking, I mean hes now told you three times he has you beat, hes not bluffing, and if he is, this is just one bluff youre not catching