I found out I'm not pregnant!
Why would you tease people that you were?
I just wanted to get rid of my boyfriend, he gives me the creeps.
It's OK if you do not like the person that you're speaking with. But what is not right, it's for you to lie about your pregnancy especially if other people can hear you and start spreading rumors about you. It's better to just outright say to people that you don't want to talk to them instead of spreading lies.
I don't really care what he thinks.
I understand where you're coming from, but lying about something like this isn't right. This could really harm his mental health and that's unfair to him. If this is someone you don't want in your life simply tell them that and move on from there.