there is no hope said:
I've found it doesn't matter how hard you try, success or failure is largely based on preconceived notions people have about each other. It's amazing how far people will bend to justify their first impressions or gut instincts about a person. That applies to mating especially, but all social interactions are affected.
I've tried being the real me. It doesn't work very well at all.
There are a lot of reasons why the mating game with women is basically a lost cause for the majority of men, but it's far too gruesome and would probably lead to a ban if I spoke too freely.
You refer to finding a significant other as "mating". I've found the way people phrase things often indicates how they view something, which in this case it implies you don't really hold love-relationships in high regard. You're verbally diminishing them into nothing but a purely materialistic or animalistic relationship.
I agree that 'first impressions' and preconceived notions are very meaningful to a lot of relationships and every kind of relationship, but they are obviously not everything. People will indeed 'bend' as you suggest, for some of these reasons, but most people certainly won't break on them. Real relationships usually only last due to getting passed those preconceived ideas and first impressions, down to the real person, and still enjoying what they find. It is the same reason why you can date a hundred people and still not find 'the one' who you want to spend your life with.
I'll add that it does indeed matter how hard you try. Since 'trying' is part of both the first impressions and everything that comes afterward. So if you're not 'trying' in a relationship, and essentially giving up before it even starts, then you're not ever going to have any meaningful relationships. Real relationships are a give-and-take, if you're not giving then you're just exploiting. And if you're only giving and not receiving then you're just being exploited. If there is not a balance there the relationship won't last. So this is why you must 'try'.
This would also mean that 'trying too hard' means giving too much, an unreasonable amount that is basically unsustainable and not reasonably reciprocal.
And sometimes the 'real you' doesn't appeal to some people. That's why you keep trying and keep looking. Not every pair is going to work together, obviously.
But I'll also note that there are major differences between being the 'real you' and being someone who you think you are. If you don't know yourself very well you're going to fail at trying to be 'real' most of the time. A lot of people seem to do this a lot, mostly due to low self-esteem issues but many often do it due to arrogance, as well. So it's important that someone know themselves if they want to be 'real' for someone else.
Personally I think this is why a lot of marriages and long-term relationships end, too. Someone ends up 'finding themselves' and it ends up not being who they have tried to be for so long. The result is an incompatible relationship.
But, hey, that's just my opinion, I guess. And it's up to you to determine how much of it applies to you, if any.