Dear all,“He and my mom had a relationship and they were in love at the time, and they had me out of that relationship, but I never received any of that love at an age I could remember it. I have so few memories of him, I’ve met him so few times, it’s just not been what I had hoped for.”---taken from The New York Times
The above is what a young man said about his relaionships with his fateher. I am wondering whether I can use it is just not to substitute it's just not been and its meaning won't change? Thanks.