re: seduction guy
It seems a bit "trying too hard" to me? I get the vibe of someone who has been rejected in the past, and now needs to "make a point about how desirable I am"?
When in my 20s i knew a few guys who were a bit OTT like that...
"oh yeah, my girlfriend is a really cute japanese girl and I am also cheating on her with this hot spanish girl aren't I cool?". 
Of course we all have our wild years and men like pretty girls, but there was something of the "doing it so I can prove i am an alpha male type" rather than "doing it cause i REALLY enjoy it and the company of the women i am with".
Men who think of women as "conquests" are still replaying the high school mentality of being nerdy kids with a grudge against all the girls who rejected him! Need to have some personal growth, I think! 
(i admit i was a geeky girl, and had a few years in my 20's of "collecting male admirers just to show i have the power", but much happier now i just "look for what feels good to me" and I feel attractive even when I have no prospects).
Even if you don't want marriage and babies or a solid partnership, surely good sex with one lover is better than a series of ONS's? you can develop things, trust each other to go a bit wild etc etc....and you know you're making the lady happy if she is coming back for more...