Yuliya,
In 1998, I met a Canadian lady on a site similar to this. She already had three children.
We eventually married and I became "father" to her children. Sadly, 10yrs later we divorced, however, the children remain "my children" and I continue to treat them as such.

My point is this....
If a man truely loves a lady, he will accept her family as an extension of his own,
So do not hide your children, be proud of your maternal gifts, for that Is what children are.. Gifts of love.
Neil