I would guess he said "about a week" because -in his twisted mind- it makes it easier for you to handle.
I also think that taking two months to see if the love comes back is the wrong choice. He is acting strange, because he doesnt love you, and is too gutless -or is using you for sex- to walk away.
3 1/2 years is a long time to be together, and feelings can change a lot during this time. He has admitted to liking other girls (I find that really degrading to you) so I would tell him to leave and go to one of these girls.
Mick
*MaJiK*
There are not many things I fear in life, but disappointing you is my greatest.
I love you even with your flaws... I love you because of your flaws.