I agree with VeraNadine.
People usually go through something painful when they themselves delete love from their lives. But it could be he/she has been conditioned to be this way.
I say this because a friend of mine was so "cold" and similar to your cousin. An anthiest, believing in only what he sees, and fullstop. I later found out that his family were not so close, and the "Athiest" that he called himself, was just a castle he built around to protect himself. Just like some people use religion that way (altho i think true religion is the most misunderstood subject of all in the history of mankind).
I always had "feelings" of phsycic abilities, But whenever i watched a phycic film, it was dismissed because i have watched the film so i might just have "wanted" to feel that way. But after years of going back and fourth. I really found it when i started trusting it. It amazes me everytime, cant point it out exactly how it works, or even why it workds at times, and why it doesnt at times, im growing tho
Yes i did get obsessed at one point trying to "prove" this to my friends. When i got a lecture of sanity from my dad however, i thought its best left at that. After reading some of steve's articles, i agree with him that you do not need to prove reality, as reality doesnt even care to be proven, it is just there. I know this is not probably the best answer you were looking for, but probably going towards the right direction i hope.
until next time , take care, and as steve sasy, "live consiously" hehe (been listening to audio files on repeat! lol)