Hey yo!
I agree, it is definitely best to let it go, that's simply true, but like I can really talk for one, and for two easier said than done is equally just as true. Love is powerful. Still, best to let go, and that comes easier when new love comes around too.
In my opinion,there are different levels of love,and as far as "his" point of view, in my opinion, there had to be something there, at least at one time.
Thirdly (belch!) scuse me..that one part asking if it was in vain, again, in my opinion anyway love is NEVER in vain, love is always symbolic of beauty so it's impossible for it to be.
peace! --Mike F/F