I dont know that one exactly, but here are some that are similar:
Erotophobia - Fear of sexual love or sexual questions. (possibly!)
Philematophobia - Fear of kissing.
Philophobia - Fear of falling in love or being in love
Sexophobia - Fear of the opposite sex.
there is no fear of love, but fear of losing love.
fear of government control
Charlie biggest fear is losing his life or dying
Npd and fear of losing is caused by the lack of feeling the need or attention from someone or family members
losing
The fear of losing a limb, or the fear of people who have lost limbs.
Bananas(:
Lassiochemusophobia
The fear of losing someone you love
Men naturally want to be heroes, save things, and fix things. He could just want to be your hero or he could subconsciously fear your death. [additional comments from this contributor moved to Discussion page.] Another possibility could be that "death" in the dream represents losing you. So the dream could be an exaggeration of your boyfriend's fear of losing your affection.
low self esteem
losing injury his coach