Hmm.....you might like "Dealock" then. It's not exactly similar but it has a similar feel to it. Be warned though, it's a rocky ride. It's not as sweet as My Life with you. It's pretty angsty with a RAPE tag. It gets much better from the 3rd part of the story. It has both manga+novel+drama cd. The manga is being scanlated. The novel translation is on hiatus. But, the drama cd is comoletely translated & available on net.
http://www.mangago.me/read-manga/deadlock/
And if you don't want to go through all that then, here's a DJ that you might like - http://www.mangago.me/read-manga/katekyo_hitman_reborn_dj_mr_mr_hitman/
Damn!! You are SO LUCKY!! I am jealous of you! I have listened to the drama cd millions of times!! And I love it to death! But I didn't read the novel :(
Too bad, you have already read it. Then.....have you tried Chongtak's stuff? It's not similar to MLwY, but it has this whole foreign vibe going on! The art & story makes it a win win!
http://www.mangago.me/read-manga/on_doorstep/
http://www.mangago.me/read-manga/midnight_rain_ctk/
And If you are up for another novel try "Love Water" aka "Girou no Koimizu". You can also download this one from net. This has a similar feel to MLwY. So, you might like it.
Can someone recommend me book novels similar to My Life With You?