Have you heard of queerromantic?
It's a type of attraction and relationship closer to and similar to romantic, but distinct to it. It's both different from romantic attraction/relationships, while still having romantic aspects. If queerplatonic is the queering of platonic attraction/relationships; queerromantic is the queering of romantic attraction/relationships.
Actions by itself aren't specific to any type of attraction. It's how we view them that make them sexual, romantic, sensual, platonic, etc. If you feel that your relationship and feelings for him were kinda romantic but, at the same time, felt no romantic attraction, I'd say no, you aren't greyromantic (At least not in the strict sense). But you could be greyqueerromantic.
Soft romo relationships and appromours can develop from queerromantic attraction.
But again, only you can decide how to categorise your feelings.