Love is inherently
utilitarian in my opinion. Therefore, it is by consequence, inherently selfish. The question is then, is this selfishness good or bad? To answer this we must ask ourselves if we can really hold matters of the heart to account when we have no true control. Love is basically amoral, not immoral. I think 'moral love' ('moral' being something done for an objective good as opposed to receiving anything in return) is something we have to teach ourselves and learn over time. It's a love we aspire to, but don't really achieve.
Simply put, morality and love are not bedfellows. However, I do not think this is a bye to allow individuals to act irresponsibly and recklessly to one another, as I am of the firm opinion that recklessness - even in matters of the heart - is immoral. It simply means that you cannot ever truly hold someone to account for choosing not to love you, or trying to coerce them into doing so. Love is - stepping neatly around all the sentimental smiles, sonnets and screenplays it creates - nothing more than a glorified pair-bonding process. It is from an objective point of view, nothing more than a biological process to which we have no true conscious control. We can consciously narrow down who we ideally wish to fall in love with, but we cannot ever control to whom and when that process will eventually happen.
In trying to narrow down your search, you are perhaps being a little immoral/bad, but I wouldn't lose any sleep on it, as it's just an inevitable consequence of being a mammal. That said, it could also be seen as a psychological form of hedging your bets and chasing an ideal, which from a utilitarian perspective is infact moral. An individual on either extreme (all looks, no personality; all personality, no looks) is unfortunately, undesirable. But then, that does depend on your ideal in the first place.
Personally, I need the whole package; looks and personality. Indeed, I'm selfish enough to admit it too.