is he cheating 💔

So today I found a woman's number in my husbands pant pocket I wasn't snooping or anything just emptying his pockets to wash and I see a paper folded so I ask him is this paper important or can I toss it he started acting weird calling me over kissing me telling me sweet things (he never does this) so I laugh and say why u being weird? And open the paper and see this girls name and number and ask him about it he says idk babe I do t kno who it is.. and  like dude just be real like who is this chick? He continued to say he didn't kno and just stoped talking to me about it won't answer me so I called the number and he jumped up took the phone out of my hand and hung up. I called again and she answered I asked her about her giving my husband her number I wasn't rude and she wasn't either she said she didn't kno him or how he got her number then hung up. Idk what to believe. We just got married 1 month ago. Advice ladies please?!