is it normal to want to be unfaithful when your relationship is lacking intimacy?

I don’t have a therapist yet to talk about this, but my relationship after going on vacation suddenly lessened the intimacy we had, my partner barely wants to kiss me anymore and he used to all of time or barely holds my hand etc. I crave affection all of the time it’s one of my love languages, but this lack I’m not sure if it’s making me split but I feel as if I need to find affection elsewhere and i’ve had a pattern on cheating in my past years ago when this was the case. I don’t know if he’s seeing someone else or just isn’t attracted to me anymore or is feeling down but it’s bothering me. I know I won’t cheat but the thought is there and I don’t want to ever let it happen as I love him a lot and have kept a faithful streak for the first time with someone. but it’s been making me overly emotional and making me want to split.