What are some evolutionary advantages of Love?

shared, mutual bonding between sexes shared parental care tends, on average, have great reproductive success in raising altricial (helpless) young capacity learn complete prolonged juvenile stage bonding behavior trait has established in gene pools of many mammals , birds. behavior under stabilizing selection towards average range of bonding strenghts maintains genetic variation keeps gene complex beneath bonding behavior functional.

pair-bond strength , stability , reproductive success."
http://webcache.googleusercontent.com/se...
"stabilizing selection on genomic divergence" of complex genetic traits
http://www.pnas.org/content/101/8/2381.f...

basic ability think , feel provides basis types of bonding behavior. love or pair bonding possible there no inherent information or restriction on expressed towards or how expressed. have ability feel in way humans share, due how brains chemistry works , how brain develops in embryogenesis, after set learned behavior on how >well< express innate emotions.

‘gene associated pair-bonding in animals has similar effects in human males’
http://www.physorg.com/news139570079.htm...
males carrying 1 copy of allele 334 of gene avpr1a display less affection.
"we found female partners of men 1 or 2 copies of allele 334 reported less affection .... allele 334 associated increased activity in amygdala, brain region involved in regulating emotions."

avpr1a in humans suggest possible link musical aptitude, autism susceptibility , social behaviors, such altruism , pair bonding.
http://en.wikipedia.org/wiki/arginine_vasopressin_receptor_1a#humans

“avpr1a , oxtr polymorphisms associated sexual , reproductive behavioral phenotypes in humans.’ associations found between 2 alleles of avpr1a gene , age of first sexual intercourse in men , women while 1 allele of oxtr gene correlated tendency parent children @ earlier age in females.
http://www.ncbi.nlm.nih.gov/pubmed/17939166

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