When you're at a point in a relationship where you have sleepovers, and even more so, when you're married, you should never go to sleep angry. This doesn't necessarily mean that you need to make up from an argument or disagreement before going to sleep. What I'm basically saying is that you should have a sense of peace, so that not only do you have sweet dreams, but because there will always be disagreements between couples.
It's important to accept the fact that true love sometimes disagrees. Couples can't agree on everything in life, and there will always be differences of opinions. However, when it comes to being in a relationship with someone, it involves maintaining a certain sense of stability and comfort in knowing that just because you don't agree on everything or get into an argument, it doesn't necessarily mean that you're going to break up or even that you withhold intimacy from your partner.
I realize that this is a personal preference when it comes to being intimate with your partner after a disagreement. Having said that, my personal feeling is that you shouldn't hold back your affection from your loved one. If anything, when your feet touch while laying next to your partner, it can sometimes let them know that everything will be okay, it can provide a sense of peace, and that you'll eventually work out your issues. Sometimes, your feet touching one another can even lead to more (if you know what I mean).
It's important to feel comfortable in your relationship, and to know that when you disagree with one another, it's not the end of the world. You should know that nothing is going to change if you wait to finish discussing an important matter or something that's bothering you until the next day. Sometimes waiting until the situation cools off is the smartest thing to do. I definitely don't believe in sweeping things under the carpet, or to keep postponing a serious conversation or any conversation for that matter if it's bothering you. However, when nighttime falls, and it starts to get too late, it's important to communicate your feelings to your partner, but also to let them know that you can definitely discuss everything the next day.
This is where disputes sometimes don't end, and head into the late night preventing one another from sleeping comfortably by each other's side. Communication is the key here. Actually, communication is the biggest key to having a healthy, happy, and loving relationship altogether. However, in a situation as such, and when there's some sort of disagreement that's talked about until the wee hours of the night, it's important to also communicate the fact that you're not trying to avoid continuing the talk, or avoid confrontation altogether. Instead, explain to your partner that you simply want to get a good night's rest, and that you'll make it a priority to talk about the issue the next day.
If you don't let your partner know that it's a priority to you to make peace with one another (the next day at the very least), it will likely bother them, and they'll feel as if you're avoiding the situation and the talk altogether. Remember to communicate your feelings with one another so that you'll both feel heard, understood, and even when you don't agree on everything. As well, remember to appreciate your partner for all of the good that your relationship has, as opposed to what it lacks. Just the fact that you have one another, that you're committed to each other, and love each other dearly, is reason enough to sleep side-by-side, make peace, and at least, until the morning.