I do have children. I hope they have children of their own someday and so on and so on and so on. Yes, they are a big consideration. That is why I am in a faithful, monogamous (from my standpoint) relationship right now. But I do not let that preclude me from getting to know others. I do not try to stop my husband from opening his soul to others. He has female friends and colleagues who he spends time with and I do as well (male and female). We've agreed that we stay faithful sexually because that is what is best, most respectful to one another and for safety if nothing else. But I do not own his genitals and he does not own mine. Our souls and intellects are free. I do not expect him to be everything to me and I cannot be everything to him. If he gets emotional, intellectual, etc. from other sources whether they be female or male, he is free to do so (as if it were mine to give!). And likewise with me. If one of those relationships for him became sexual and he told me (hopefully beforehand) I would not hate him. I might even stay with him. I don't know. I just don't "own" or feel "owned" by him.
Hard to explain.
~Brigid