i want to have half sisters or brothers!

So you want your parents to have a love affair, okay.... that's kind of imaginative....

i don't have a father...

I'm sorry, if I sound kind of stupid(which I probably am) but I hope you have your want come true :)

That's not the only way you get half-siblings... My mother never had an affair neither did my father but I have four half-siblings on her side and one on his side. Sometimes people re-marry, or just break their current relationship and get with someone else...