The word 'love' as in 'love you' at the end of almost every phone call and saying 'I love you' way too quickly in a relationship or saying it at all when it is not warranted or sensible to the situation -
is a ridiculous fad in recent years. It's an anathema to so casually use 'love you' at the end of phone calls for casual friends, friends of no endurance, casual acquaintances.
And 'I love you' should not be said except in the most serious of romantic, intimate relationships of length.
People have devalued love by using the term so sloppily.
The word 'love' should never be used with someone you are just 'dating', OP.
And yet these people almost certainly use it with parents, grandparents, and relatives they feel nothing for.
R1 and R2 are examples of this weirdness.
You are freighting this word with so much significance how could you ever use it?
R4, that's because the word 'love' does have special meaning.
The word 'love' has been terribly devalued by the cellphone age of ending so many conversations with casual friends with the faddish phrase 'love you' when that casual friend is certainly not in the realm of love and will not even be in your life for any length of time and with whom you share the most casual of connections.
And saying 'I love you' in a dating situation is highly ridiculous and devalues the meaning of love.
OP and R4, you are so hungry and needy for love that you are looking for love to be expressed in the most casual of relationships and in relationships of no endurance and length.
Love is reserved for someone you would love for a lifetime or decades.