I was planning to break up with my boyfriend, but he bought me gifts. Feeling a tad bit guilty.

[Stret]

Gifts would just p*ss me off even more. 
It is a certain sign of manipulative character and in particular because he gave you "I thought to leave them earlier for you but forgot" line. 

Just get out and one day you will see how right you were to trust your own instincts and not his manipulation. 
But for the sake of argument, let's just say he's done it for the real reasons... so what? You still don't have any respect at home from him and you never will have - these guys don't change. You have to leave that environment. 

[Stret]

Also, by mindful of the fact that he will up his game when you actually break up with him. He might beg, tell you stories, make you feel like you are losing the best guy in the world just to get you back.... when he does, things will just keep going the same old way. 
So when he does up his game, I would like you to look at him and everything he says and does, as manipulative tactics. None of it will make any sense to you, none of the things he says, so don't ask him "well, if you felt that way, why didn't you...." Don't play into his hands. Just announce your decision and get yourself somewhere nice and emotionally safe. Whatever he says: I'm sorry, I made my decision and there is nothing you can say or do. 
Don't let him guilty you with "I thought we had something special"... "you were the first woman that...."those are all phrases used by manipuplators.