The heart wants what the heart wants

Counsellor, The father of my three children broke up with me and went back with the ex who he had left to be with me.

Now they are planning to get married, and he says he’s marrying her because they’re more compatible and she makes a better partner in a business sense, but he wants to maintain what we have.

He says he still loves me, and the plan is that he will eventually leave her and come back. In his head, he is planning his future wisely. He says she has a lot to offer, and the investment is worth it, but the ‘heart wants what the heart wants’.