“So in a complex technologically advanced civilization where the individual no longer needs relationships to reach great well-being, could enough random mutations cause the desire for relationships as well as sexual lust? Even if they still desire others and this was apart of reaching great well-being it would come down to how they reproduced. This is to say though that enough of the population reproduced without another person present to result in a significant portion of people with the mutations. I could see how many people might even prefer this so that they could cherry-pick desirable genes. This ambition for perfect genes mixing with contraception perhaps could make it more realistic. Do you think its a possibility?”
I like questions like this because I think it reveals a basic misunderstanding of evolution by natural selection. It is difficult to see how a complex techno-society could wipe out or minimize the genes responsible for sexual reproduction or the social behaviors that have evolved around gaining suitable mates.
The part of your interesting question that is missing is the part that environmental pressures have on which allele sequences (mutated genes of certain types) move on and which ones do not! It is hard to see how a high tech society would minimize this impulse since nothing external to our social environment is adding the pressure on the relevant gene sequences. The social and “sexual” orders would likely simply co-evolve! If not, what you would need to reach a society like this at all-is some sort of complex environmental pressure or set of pressures that would favor those phenotypes that require less social contact for survival. Oddly, you would have sexual reproduction, since the strategy is ‘survival long enough to reproduce,’ with less and less need for social foreplay or kin-caretaking etc. and still possess sizable brain capacities. However, there’s a kink with such an imagined scenario: Since it is believed that such complex socializing had much to do with our brain size increases-on the road to more survival-less socializing would probably produce humanoid species with smaller brains, hence NO complex techno-society! Apparently, for us, big brains do not come about without strong socialization!
What if we just started with something analogous to us but relied little on social-sexualized forms of socialization in order for that species to reproduce and attain high levels of comfort? Well, then, the same issue applies but in the opposite direction. You would have to have those in the population that would have genotypes that favor slightly stronger socialization (hence the appropriate allele sequences) combined with environmental pressures that push the population towards ever greater numbers of sexually interested forms of behavior. The result might be smaller brain size capacity-since such a humanoid species presumably evolved large brains without the same social pressures! In any event, either scenario would likely NOT come from the other or if one line did, it would be on the order of several hundred to thousands of generations to produce. Natural (and sexual) selection does not happen overnight or in ways observed on shows like True Blood (though a favorite of mine). Such specie-wide transformations require genetic diversity, environmental pressures, and lots of time! So, my answer is that it may be possible-but highly-highly unlikely!