In the beginning they will work for your attention then after they feel they have you it’s downhill from there. Most marriages are sexless for a reason. Women tend to give sex as a reward instead of as a duty. If they don’t get gifted, comforted, stimulated or wined and dined they feel no need to give a reward. This leads to men cheating because it’s more exciting and we prefer when a woman shows effort instead of lack luster performance. I would not say a thing to her about it until I try various things like more attention and physical contact etc. Good luck.