Now I am not too sure how much I can trust him. When I asked him why he did not tell me about it, he said he thought it was not necessary, since he had concluded the relationship. I am confused because I feel time is running out for me and yet I do not want to get problems in future.
Love cannot exist without trust. It must be a tough decision to make. However, If you came across someone you feel you love, and yet you still cannot trust him, then you need to ask yourself a few questions.
How long have you dated? Sometimes when the period is quite short, such issues are not discovered because both of you need to grow to a level where you can trust someone enough to confide such sensitive information. You said you love this man, do you think he loves you? Has he mentioned it to you or possibly shown it to you?
If he can hide, how much can you trust him for a lifelong relationship? He indicated that he did not think it necessary and yet it can affect your relationship. At this point, you need to take it slow; you are safer taking your time than rushing only to find yourself tied up in what you dread.
If he said he had separated, you need to be sure that they were not legally married. If they were legally married, then separation alone does not conclude a relationship. It requires a divorce, to be sure that you will not have any interference.
However, if the marriage was not legal, you still need to establish what the position is now. Who is responsible for the children? Does he still have to provide for them? Such issues are likely to arise in case you decide to settle down with him. In case you still have reservations, give the relationship more time before you go into legal ceremonies.
All the best.
He has two children but has never told me