The real fear, behind fear of loss, is fear of pain. I make peace with the fact that I will hurt sometimes in life...and this is OK...I will get through it...through sleep, exercise and loving someone new.

Are you seeing a therapist? It's normal have some occassional concerns and worry about loss but to be petrified is an extreme feeling. I know you have OCD based on your other post, so do you think it's tied into that?

I agree with what the, others have posted....I don't know how you are with the person you care for however I wouldn't project these feelings to often...
Accepting that we do get through what life deals us is a gift to yourself..
.There,is good help to be had if you're struggling...xo

I have similar feelings...so terrified that I will lose my love & wonder if I made a mistake letting someone have my heart & enter my life.

I relate. Here is what comforts me: know that sharing your time here on earth with a partner is a gift to that person (and vice versa). When we love others for all that they are, and accept that we will sometimes be unhappy with partners as we discover our differences, it's easier to see that relationships ebb and wane. You are in a really beautiful, happy part of yours right now. Over time that sensation may strengthen, and it may weaken. I feel that relationships are commitments and don't end suddenly, but end over time with many conscious decisions to prioritize something else above your partner.
Know that as long as you are taking time to do the things you love, you will nurture a relationship with yourself that will give you strength if some day you and your partner find that you are not growing in the same direction and part ways. I like what koolman says too. Pain comes sometimes and we nurture ourselves best when we allow ourselves to feel and take one day at a time to heal.

Cultuvate a life beyond your thoughts and feelings. Volunteer, be active in your community, step outside your head. When you are out there living and interacting with others, you realize that people everyday are losing children, parents, brothers, sisters, partners and friends, people deeply cherished and loved. And yet they find they survive, that the sun keeps rising, that the world keeps turning, that human resolve is bigger than worry and fear.

Living guarantees loss. We are designed to die. That being the case, what do we do? Decide to shun relationships, stop loving, stay distant? No, we love harder and fill our lives with people we care about because loss reminds us that life is important.

Get this under control so you can enjoy your life with this person for however long you are together. You're cheating him and you if you don't.