So if the ex of your partner is starting to reach out to him/her, how would you react?

Let just say I won't be subtle about it .

I do nothing, at first. If she acts in a way unbecoming of the values our relationship is based on, I leave, no questions asked nor needed.

People aren't (usually) stupid or naive enough to not know their actions have certain consequences. If she is that stupid/naive, we are definitely not meant to be together since I abhor those traits.

say nothing... ive dealt with soo much bs from that man, i just stay cause ive known him for long but its not forever just until i find the right guy too move on too

Unbridled rage.

Just kidding. I'll let it bubble under the surface until it's time to let it out.

Invite him to do a DP on her with me.

Depends...do they have kids together?

Ask a lot of questions

Confused

I'd get mad.

It happens

Save a whole bunch of money on my car insurance by switching to Geico.

Your partner need to decide if you love is stronger he will stay with with you only!