just need a shoulder

Things between me and my SO has been so rough. We fight so much these days. He did something 2 weeks back and it made me so very insecure. (Gave his nr to other girls) since then we live past each other. We dont have sex. He rarely touches me. What scares me is that im beginning not to care or mind this. Im usually a very affectionate person but i dont want to be touched. How to reconnect? its like hes not into me. Please advise me?