I certainly think Sasuke is capable of falling in love.
Though he may not be able to trust fully, and I can see that being his biggest issue for the remaining years of his life... but he will be able to love... and love just as strongly, he just wont know quite what to do with himself. I see Sasuke as awkward in love, unable to get what he means across, and always leaving mixed signals. (well, who doesn't, huh? lol) He'll just be a bit more extreme... and sometimes he'll try to run away from it... before it disappears on him... ::huggles Sasuke::
@Uchiha1412Toshi - Love your Sakura signature! ^^ <3