How to answer if she asks if you'd be honest about losing interest

This question doesn't come from nowhere. She's either been ghosted or watched it happen to a friend. The specificity of her wording 'would you actually be honest' means she knows the difference between guys who say they will and guys who do.

She's not asking because she expects to break up soon. She's setting a standard now, before feelings get messy. If you say yes and then ghost her in three months, that sticks with her longer than if you'd just been upfront about it from the start.

Don't philosophize. Don't make it about how rare honesty is or how much you value communication. She already knows all that. What works here is a clean, simple yes with maybe one sentence explaining what that means to you.

The move is straightforward: confirm you'd tell her if interest faded, and maybe one honest reason why. That's honesty itself. Anything longer reads like you're trying too hard to convince her, which makes her trust you less.

This is a question that deserves an answer, not silence. Reply within a few hours while you're in conversation with her. Don't overthink the timing.

Once you've answered, don't bring it up again unless she does. Circling back to prove yourself is the opposite of what you just said. If she doesn't respond or seems unsatisfied, that's a real signal worth reading. Don't try to fix it with another message. Let her come back if she wants to push on it.