Gifts to make up for an affair!?!?

My Birthday was February 26th and my husband didn't get me a gift. I got a crap card that just said Happy Birthday and he told me the day before when I went to the store I had to pick up a cake mix for my daughter to make. The day sucked he watched tv and played on his phone all day. I even had to cook dinner and we got in a fight I thought the least he could do is take me somewhere to eat so I didn't have to cook and do the dishes. We had not been getting along and I didn't get a Christmas present or a Valentines present either I really expected him to make it up to me on my Birthday. Well I found out why on March 7th I looked at our cell records and found that he had been texting another woman since October. Yep he had been having an affair. To make a long story short he broke it off with the OW and has been trying to make it up to me. I am hesitant and guarded and don't trust him at all. But for the sake of trying to save a 12 year relationship (10 years married) and keep our family together (three kids). I am allowing him to try to make it up to me. Last night he came home with a necklace it is a silver key with a heart with diamonds at the top. He said that I hold the key to their hearts and that it was for my birthday. I don't know why but I hate the stupid thing every time I look at it I want to cry and I remember that instead of buying me a bday present for my actual bday he was texting the OW. I know that he is trying but I feel that it is just too late and everything he does to try to make it up to me (the affair) is fake. I hate feeling like this. Part of me wants him to take the necklace back to the store because it is bringing me such bad emotions. But I don't want him to feel that I don't appreciate his effort or that nothing he does will help. I am afraid if I tell him how I feel about the necklace he will feel nothing he does will help and he will stop trying. But I also don't want him to think that a necklace can make up for what he has done. Any advice. :scratchhead:

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