Love is a much abused word, used to describe so many situations and sets of expectations, we are left puzzling over what it is or how to identify it. Does it involve affection? Unconditional loyalty? A feeling of respect? A decision? Must it be exciting? Must it be difficult? Does it die?
There will never be a universally recognized definition. Not everybody will agree with what you think. People will say "love" of situations and feelings that would horrify you. Dive for the meaning behind the word, for there is nothing magical in the word itself. Be clear about what you mean, with your beloved. Ask for the same in return.
It's a waste of time to sit around wondering "Do I love him?" Figure out what you really want to know. Are you wondering whether this is the deepest affection you'll ever know? Are you wondering if this relationship is viable? Are you wondering whether your feelings are really strong enough to carry this bond through times of trouble?
There are many people who are capable of exciting, attracting, and intriguing you. You might form deep bonds with many people or even feel instantaneous and everliving affection for a few. By one definition, you love all of them. By another, you love only the one with whom you choose to align yourself.
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The machine does not isolate man from the great problems of nature but plunges him more deeply into them. -Antoine de Saint Exupéry