Yes he has made it clear through words that he cannot love P.
The honeymoon resort episode showed how much her advances makes his cringe.
P knows V does not love her or see her in a romantic light but she wants to possess him by claiming she loves him and sacrificed a lot etc blah, blah
Love is not bondage and never asks for anything in return, V has experience love with Sai, he knows the difference and also know P does not love him but see him as a prize or some sort of payment for being a "DIL", convincing him to adopt Vinu (imagine when she find out it's the real Vinu i.e if she had nothing to do with him being in the orphanage).
It's also strange that the same orphanage is the one CN is patron off.