I liked the way laxer12 framed this.

Being able to take in what your therapist offers helps. It sounds like deep, repressed needs emerged after you started therapy, which is common for those of us who had a lot of unmet needs from childhood. Psychological defenses that block us from feeling those needs can also block us from fully feeling love and joy. And working through these issues with your therapist will allow you to be more fully present in relationships in terms of intimacy/sharing. So I do agree getting some of them met from a partner is one part of it. Self-love, I think, will help reduce the intensity of needs over time. It takes time...

I do think that 'void' becomes smaller and smaller, although I personally do not think this ever goes away in entirety after the long disavowed childhood needs re-emerge.

Although I have intense, painful longings for both physical contact and nurturing from my therapist, het does provide some of these unmet needs from childhood--being present for me, listening, empathy, investing in my well-being. The eye contact and gazes. Someone who believes in me....

Keep taking in what you can. One day, it will get better.