My previous boyfriend invited me and my current boyfriend to his birthday party. Should we go? I am still cordial with him and we hang out with many of the same people and places? Looking for different options. Thanks.

I wouldn't put your current boyfriend in that position, unless he is 100% ok with it.  If your boyfriend will know lots of people there, discuss it with him.  If he is hesitant, don't go.

Personally, I wouldn't drag a boyfriend to a party for an old boyfriend.  I wouldn't want to go anyway.  Tots Awk!