I feel TERRIBLE...

So I've been going out with this guy for around a week now. I've been getting the feeling he doesn't like me but then we'll FaceTime and see eachother and then realise he actually does. Last night I honestly thought he didn't (I overthink everything) . My ex boyfriend told me he missed me so i called him to talk about it. I told him I'll see how it goes with me and my new boyfriend but I suppose I still kind of love him and that I missed his voice. I didn't mean to say ANY of those things, I honestly said it because i was feeling lonely. I know what I've done is terrible and I really do love my current boyfriend and I know he loves me too, but I'm worried my ex will tell him because we fell out on the phone last night...please no hate...