secret relationship can be ground of refusal?

[Panamai]

I think you'll be just fine. It sounds like you've been completely upfront and honest with CIC thus far. It is understandable that in a gay relationship, you will often not get the same approval from family as in a hetero one. VO's are not stupid and they don't live in a vacuum. This is why all cases are read through and considered on an individual basis. Every situation is different and some couples face more adversity than others. Just continue to be upfront and honest and you will be ok.