The former one can feel like a big step. The latter can feel so hard, if you got sympathy for them. Meh.

That I don't love them back and I'm not sure I would be able to do that.

The latter. It hurts to break hearts.

I don't love them back.. wait may be nothing is as hard

Idk, both are pretty easy for me..
Maybe the second one

I am kinda cautious anyhow.

I love you is too much hard to say.

The latter. 😢😢😢

The first

I do not like telling people things that would hurt them if they were close and intimate with me.

2nd is harder

That I don't love them back.