i'm on the fence, personally.
At this point Chris and Flutter do seem a couple. They've been spotted together so much, and he now visited her in Finland aswel? Hard to call that "just friends".
An expensive friendship.
With that in mind, it does give credibility that he got her pregnant. Assuming he physically can and that they are a couple. It's not a stretch and Chris' words would add to that.
But yes, Chris can be unreliable, and even that clip can be interpreted in multiple ways. She could be smart enough not to want kids with him, even IF she really likes him. Time will tell, I guess.