Thanks for sharing your experience.
At the moment, I'm only in one relationship. My partner (who is in two relationships) has become quite close with my daughter. I think I have an issue with 'traditional' family in particular. My daughter was brought up by myself and her father (a monogomous relationship) until we split. So she's starting to see my boyfriend now as more of a fatherly figure to herself.
What worries me is beginning another relationship and her not 'knowing' or feeling she should 'choose' who to relate to in that way - I still feel she needs a secure family unit and won't know how when I do have another partner.
When it comes to school and stuff - well, they already have lots of questions about my lifestyle! So I don't tend to worry too much about that - just giggle at them instead :P