Search Results: giving out my number

I've been in touch with this person for a while (about a year), but their phone number isn't attached to their iMessage account, only their email account.

They gave me their phone number, and we were exchanging plain text messages for a while, until they reached out to me over iMessage. We communicated over iMessage from then on, until we had a... kind of falling out of sorts. It wasn't really that we had a disagreement, it was more like we were just in different places (geographically) and pumped the brakes on things. We each said that if the opportunity arose to reconnect in person, we would, but that the online correspondence would basically stop.

This happened a few weeks ago and we've basically been no contact. Giving each other space was definitely in order.

In any event, I wanted to wish this person a happy Thanksgiving, so I prepared the message and selected her email, so the message would send over iMessage. My phone defaulted to her phone number and sent a green bubble.

I'm just wondering if that's the default when someone's phone number isn't tied to an iMessage account, or if I should just assume I've been blocked and move on?