Beyond that I'm not going to discuss as I find even saying all this pointless. The ones who believe and don't want to question their beliefs continue believing what they believe. Discussing about some issues is just a pointless waste of time, unless by doing so a person at the same time discusses with himself and clarifies his thought - then it's just a pointless charade.
This is exactly the point of philosophy. You take a subject that is simple and clear, then you twist and turn it so long that no one got any idea what your babbling about, they just argue and try to argument their own point of views, which make absolutely no sense.
One of my favorites in school was the debate if chair is chair. Or does our brain simply make us imagine it is chair? Imo usually philosophers just try to sound smart, while they actually got nothing to say.
I like discussing about things with people, makes you see things from different angles. Sadly enough these so called philosophers always discuss about things that got no actual meaning, or use for the people inhabiting this little circus we living in.
I agree with Yanko about the love part. Again chemicals rushing trough your brains and body making you feel love. What causes people to fall in love, or get attracted to eachother is another subject, which is rather interesting.
There are plenty of theories, but mine is that it all starts by seeing something positive in the other person. Often the person you meet, doesnt sound, look or feel attractive in the beginning, but when you get to know the person better and find something mutual or nice in him/her.. bond starts to build. You can test this out easily. Im sure you all got a person who you hate or dislike. Next time you talk or meet him/her, try finding something positive in the person. Could be pretty nose, or tone of voice.. or even thoughts. You slowly start to think different from the person. He or she might even start looking prettier, when you give a chance for that.
(now im off from work, so my post ends here heh)