Jesse my man, you have come to the right place. Seriously the only way besides time is time with one. NOT both. Aside from the moral implications of spending time with both, you have to develop the bond for one or the other. You will get stronger with one or away from that person spending time with them.

But alas you run the risk of losing the other. So discretion is advised.

OR you could just go for the one that lets you play more video games...