I can be happy only with her, but she can not be happy with me. So, the fact is that we both can not be happy at the same time. Only if I look for my happiness on some other place. That place is not here on earth. So, if I go to the other side, if I die, she can be happy here, with someone else, and I should probably be happy somewhere else. Ironic, but isn’t this the best solution?