If you want to find a partner who is likely to stay committed to you, recent psychological research suggests that it would be wise to choose someone whose face resembles your own, because they are more likely to find you attractive.
There are many theories behind this, one of them is the repeated exposure hypothesis. It is postulated that over the years an awful lot of time is spent looking at our own face - in the mirror, on photographs plus all sorts of documentation; what develops is a very comfortable feeling with your own particular look. Much research points to the fact that when people fall in love, although they may not consciously be aware of it, they may well be falling in love with the bit of that other person which reminds them of themselves.
Of course, there is one politician who just 'ain't boverred' by faces: