someone who you love unconditionally and will for the rest of your life. your soulmate is the person that you meet once and know you want to live with and love for forever. although you may not meet at the right time, you will find a way back to eachother.
Noun, alternate definition. A word often applied to the elusive love of a person's life; the one who got away - soulmate is what a love-er calls the love-ee when the love-er is still in enough limerence to overlook the fact that the love-ee is really is an asshole/bitch. Blindly overlooking fatal flaws in a person, romanticism at an exponential level. Also used when clinging to the belief that because two people share some odd/romantic common factor they are forever linked. Used when denying fatal flaws.
"After he put an FM converter on my stock AM car radio, I knew he was my soulmate that night back in '82 we were both doing whippets at the same time. We were listening to the radio at DeWeese Parkway and 'Like A Hurricane' came on. It was so intense and beautiful that we were blown away. Then he had to go home to his wife."
A soulmate is a person you share an intimate connection with. It goes beyond "shared trauma" or similar interests. This person can be a best friend, a family member, a lover... It's someone you can dive with into the deepest, darkest sides of life without feeling horrified, because you know they'll never leave you alone. They'll hold your hand till they very end and changing their mind will never be an option. A soulmate will stay.