My boyfriend gave a female "friend" flowers on Valentines ?? Help !!?

I found a second facebook under an assumed name aka like my bf name, his only friend on this facebook account was a girl he worked with. I was on our facebook when i seen her friends and seen his account . I sent a message from our account to his other account asking WTF was going on... this was friday. He didnt check his other account until the next morning reallyyyyyyyyy early when he slips out of bed to go get online. He seen my message on his other account and instantly arranged with his boss- bestfriend to send a text message to the account saying sorry for the trble it wasnt who I thought it was, erased the account and changed the friend picture to some ex family person. All day went by on sat I made comments because I knew he had ****** up. Sunday finally we went into the bedroom layed on the bed I just asked him why do you have a second facebook ? Lied again, acted like he was offended I asked wanted to go look at the account himself. I said ok , And of course he and hisbest friend had already erased/ changed the page . He started accusing one of the guys he workd with for stealing his picture and making the account.. (total B.S.) He lied to me over and over about the other facebook or having a secret email or talking to the girl in question. Said he hated her , she was a ***** , she smoked , was a whore n slut . I gave him numerous chances to tell the truth - he lied to me for 2 dam days about it . Finally I sent that girl a message on our facebook asked her about it asked her what was going on said " he swore on our unborn baby it wasnt his account" and for her to please tell me the truth . that was Sat nite . Sunday he is still lying out of his ***, I get a text on my home phone from the girl saying yes they talk he is helping her with issues in her relationship with her ex and he never tried anything I have nothing to worry about. I really thought he would **** his pants ! He took about an hour to finally open up about it all the whole time saying it looks soo bad you wont believe me ... His story :

He says he had been talking to this girl as a friend for a while cause he felt sorry her as her ex abused her , she would make special trips to his job to "chat" for hour or more at a time. And they hugged each other every time . one day he told her I would be very mad If I knew they were friends. So he decided to hide it all from me to " protect my feelings" he says this chatting went on for only 2 weeks I say longer..... So they are talking one day she mentions hanging out sometime he gets her address. So on thursday VALENTINES DAY he leaves work just to bring me dozen pink roses. Very sweet and unexpected. His boss allowed him to do this . He goes back to work for little while the boss / best friend gives him the rest of the day off. He decided because I looked soooo happy getting flowers he should buy some flowers and then drive them an hour and half to give them to her. She cried when he gave them to her. He came back to work after that his friend telling him how stupid the **** was and he could get in trouble. He told them to mind their own business. He hung out at work awhile then came home. He was very bitchy once home being mouthy to me .. he went to bed early.

and the rest is above I guess . I asked him what was he thinking we have agreed no opposite sex friends .. He said it was nice to have an intellectual conversation with a female. That he has never had a female friend and it was nice. I couldnt believe he thought about or spent time with another female on valentines day - went out of his way to take her flowers he is very cheap so for him to waste money seemed like it meant more to do it.. he says he never thought of her that way. and wont everrr speak to her again, if I could ever forgive him and not kick him out. When he told me about the flower trip - I almost punched him . I threw a fan around instead. I want to cry all the time because of this. He lied so well for 2 days to my face , he "wanted" to spend time with someone besides me, he should have came back home and took me out spent time with ME . Sometimes I dont wan to be around him and alI he does is try to smother me . Ever since he came out he has been *** kissing like crazy. Being overly nice and loving ... How do I forgive him ? I feel sooo dam alone , hurt , I have no one to talk to ..... anyone respond ..and dont be mean please