My suggestion is to try being with him for four months and check during that time. It is not necessary to have a fixed amount of time, that is just my suggestion.

I thought you already knew samsara and had experienced it. But whether you are a nun or a layperson, the most important thing is always to live life with bodhicitta and, if possible, with wisdom.

You said you were concerned that this relationship might cause harm to you or him. It is natural to hurt each other if your motivation is only attachment or the self-cherishing thought.