For me, love is very complex emotion, its a combination of physical and spiritual love ... and it can make u do the weirdest things!!!
I dont believe in 'Love at first sight' ... i take that as infatutation .. its very limited .. once you get bored of the person, that will be the end of that physical love... u need spiritual love to keep the relationship ...
True love, at least to me, builds over time ... over many years ...
Perfect Example :
The love between a married couple that have been 40+ years will be alot more intense than say a couple married for 5 years or 10 years ...
Loving someone should never become a burden, cuz if your feeling it as a burden, then its not true love ... do u take the love for ur parents, ur siblings as a burden?
I do believe you need to be content with urself to an extent ... but u dont have to 100% happy with urself to love. i dont think any human being is 100% happy with themselves, and if they are, i just consider it as arrogance!
Love is a true emotion and i believe in it immensly ... just trying to find the right person is the tricky part ;)