I'm sorry to hear this, I know how you feel since I've been in similar relationships where I don't receive any affection/the same amount of affection as I gave. My advice is to talk to him about it just to let him know your feelings and thoughts about the situation. He might also need some more time to get more comfortable in your relationship before he feels safe opening up with his feelings. He's had bad relationships in the past so it's understandable for him to be cautious, but he should give you a chance because you are not (like) his ex-girlfirends. Another possibility is that he's not the affectionate type, or he's just not as affectionate as you are in general. Either way, I wish you all the best