Made a mistake and need help fixing the marriage

Me and my husband have been together 5 years but married for 2 years. He is military and I’m a stay at home mom to our 1 year old son. He was deployed and I went home for 5 months. We were in a really bad place and he was treating me badly and I think I felt trapped so I cheated and he found out. I know it’s no excuse but I did what I did and now we’re in real trouble. The guy used to be his friend for a period of time. I’m trying to hardest to try and move past it but he goes back and forth and barely talks to me or acknowledges me half the time unless it’s to ask me to clean or about money. I know I’m the worst kind of person but I do love him and we’ve always had our problems but I want to fix this. Any advice?