What is your idea about the differences among being friend, companion, beloved, love, etc.?
I will cite some biblical references from the Hebrew language.
Friend/companion is Yedid. The vowels are usually not written in Hebrew, or are signposts (matre lectionis), such as the "o" or "y". So, the really important letters are DD.
But also beloved contains DD: Dod. This seems to infer that the beloved is a "special friend". When you say Yedid, the "i" sound stays in the head. The "o" sound of Dod, instead, descends into the throat and the chest. It goes deep down the body. So, the beloved has the depth that the friend lacks. It is also less spiritual (it leaves the head) and becomes more practical, going to the chest, a sign that with the Dod you talk the way you really are. There is a good knowledge and agreement between the two.
Dod also means pot, kettle. So, the beloved is like one's "vessel". If you fill the pot with the content of your heart, through a good communication, the Dod treasures it and guards it, as in a pot.
Dad (DD) also means breast. From the breasts come the milk that feeds the baby. So, the Dod nurtures the other through support, assistance, loyalty, etc.
Finally, love is a different word: Ahavah. This is the pronunciation. It is written AHBH (B being pronounced as V). There is only one letter difference with YHVH (Lord), if we substitute the letter B with the V. It shares its root with the [non existent] verb "to be" and it is in the present, first person. Like saying: "I am". Instead, YHVH could be considered in the third person: "He is". I know I am stretching the meaning a little bit, but they are just reflections about the roots and the sounds of the words. There is still one step (B is not V) toward divinity, but there is still a similar assonance.
So, love is the identity of one person. Like in the phrase "one man woman". Ahavah means finding one's true identity/being. It means implicitly to be, to exist. You discover life when you love. That's why it is so important to find the right person that will make our identity with us. Love and marriage are something very sacred.