Has he said this? That you not initiating sex = you not loving him?

To me, that sounds a little concerning.

If a person is concerned about a partner not initiating, then they should ask "I've noticed that I'm the one who typically initiates, is there a reason why you don't?". It's neutral and that's what concerned people ask. Or something like that.

When you say something along the lines of "it makes me feel like you don't love me" then you are charging the subject with emotions and holding your partner accountable for your insecurities.

Sex is not the only way of showing love. And it doesn't matter that he's not feeling loved if you don't want to have or initiate sex. That has nothing to do with it and shouldn't even be in the discussion.

I would be careful with this. I don't know your situation or what he said. But if he's talking to you about sex in this manner, it really sounds like emotional black mailing.

I could be wrong! But this is a common way for partners to guilt their significant others into doing things they don't want or are uncomfortable with.