Am I bad for doing this?

So this girl I've been seeing for a little while now has caught feelings for me. She told me she's in love and has begun to use terms of endearment like "baby" and "my love".

I honestly don't feel the same way yet, but I didn't want to humiliate her so I've kinda been going along with it, hoping I'll catch feelings eventually too.

Am I stringing her along? I know I screwed up. Maybe I should just be honest. I don't wanna break her heart though.
Am I bad for doing this?
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