Nationality

Quick q re: asking Belgian Nationality - I am a UK national been living here for over ten years, co-habiting for the same time (partner Beligan) and have two children (who are Belgian too, have my name, etc)and I am considering applying for Belgian Nationality.

Possible or not? I have thought that a "no" would be the reply as I am an "eu national" etc and can just about get by with French and I live in Flanders - would I have to "give-up" UK nationality?

Just a thought, or 5.