Not enough romance? *stupid question alert*

Is there a good gauge for knowing if you have enough romance in a book for it to be considered a romance (i.e. the number of romantic/sexual/suggestive scenes)?

I feel like I have enough romantic content to make a case for romance as a secondary genre, but I'm not sure. My MC's plot is completely romantic imo. There are also a few secondary romances. I have had people also say every book has some romance, which I agree is valid.

My apologies if this question has been asked before. I did a search but didn't have much luck. (Of course, I wasn't exactly sure what keywords to search on.) Links to any known threads would be greatly appreciated.

Thanks everyone for the great advice.

I have three very tightly interwoven plots (none could really exist without the other): sci-fi (war between a king and rebellion), romance (reunion of MC and his lover), and horror (emergence of a new breed of creature). I would say romance is and always has been my focus, but I could see someone else focusing on one of the others. I guess it could depend on which characters the reader latches on to.

Are the characters falling in love? They are rediscovering their love. They fell in love ten years ago and were separated because of a tragedy. The characters are dealing with horrible truth that they love each other despite all the hurtful stuff that has come between them.

Does it end happily ever after? Yeah. Eventually.

I would love to say my story is "sci-fi/romance with elements of horror/zombie"... that feels truthful to me in terms of my intent. But if the romantic elements aren't strong enough, then I understand. I will flat out tell you, if you walk into a dark corner of my story, you will probably trip over a couple making out before you come across a zombie waiting to kill anyone.