Just an academic, rhetorical, philosophic question...
Do you think it is possible for someone to love two people (and I mean romantic, sexual, love, not the way you love your child, sister, dog or car) at the same time?
And before you hastily answer, consider for a moment, it is possible to love many people that way at different times, so perhaps it is not unreasonable to love two that way at any one time.
Just a hypothetical question, of course...