To start off, I'm a lonely friendless loser who likes to drown his woes in escapism. I'd like to know what games are good to achieve this.

What I'm looking for is a (preferably single player) RPG where I can feel like I'm really part of the world. One where I can do cool stuff, but also befriend NPCs, marry one, [spoiler:lit]do lewd stuff with my waifu[/spoiler:lit] etc. etc. Theoretically my ideal game would be something like Mount and Blade, but with more emphasis on the (inter)personal aspects of the game.

Any recommendations are welcome.