To comment about the first part that is in bold, I am the same way when it comes to not wanting to hurt people, I don't think treating someone badly to benefit yourself works out. It'll just come back and bite you in the ass later on. When you finally hit that point where you find yourself loving someone deeply and you get treated the same way you treated someone previously, you're gonna wonder wtf did you do to deserve that.
Second thing that's in bold, that is true to some extent but you can't overlook everything because of love. That's just being ignorant and allowing yourself to be trampled on. Unless the other person feels the same and you're both willing to compromise and sacrifice an equal amount (or close because it's hard to find two people being completely equal in terms of who cares since there will always be someone who cares more than the other), one of you is going to be the welcome mat on the floor for the other.
I have to say, after watching The Ugly Truth yesterday with my girlfriend, a lot of it is pretty much exactly as he said. Sad but if you watch that movie, I'm sure you'd do 1 of the 3 things:
1. Completely agree with the guy's point of view
2. Completely disagree with him
or 3. Hate it & try to come up with your own reasons to justify why love sucks, love hurts, women suck & men suck.
Either way, that movie is pretty damn funny and at the same time gives anyone some insight if they have a one track mind.