The Romans gave us Venus and Cupid. The Egyptians had Bast, the cat goddess. The Greeks - Aphrodite and Eros. The Moroccans had Qandisa, who made men go insane.
Every culture has a god or goddess of love. In our modern world there is Saint Valentine who is honoured every year by the purchase of roses and diamonds, chocolate and dining out in restaurants. Ironically, the date we celebrate him is the date of his death, 14 February. Unless you follow the Eastern Orthodox, which celebrates his feast in July. Valentine's identity is a little vague, but the generally accepted Valentine (there are many) was an Italian bishop from the third century who was beheaded because of his beliefs. However, his main function is to symbolise courtly love, the romantic ideal of knights, courtesy and damsels. This is in stark contrast to the culture of relationships that went before Christianity. There were gods of love and beauty, certainly, but also lust, physical sexuality and fertility. Far too graphic for the Medieval Church.
The Anglo-Saxons worshipped Teutonic gods and had Freya, who was the goddess of love, sexuality, beauty, sacrifice, war and death. She was a very busy deity indeed. Then there was her twin brother, Ing, (Freyr in Norse) who was associated with virility as well as fair play, peace and justice. He was often pictured as a phallic fertility god. Oh I say!
Frigg was the goddess of marriage, women, household duty and divination. Does this mean that all of her charges are connected? As it has been for hundreds of years - if not thousands - people married for many reasons and love was not one of them. In Anglo-Saxon times women were seen as 'peace-weavers' between tribes or kingdoms. This type of alliance building was not restricted to the Anglo-Saxon period of course, neither was it a role reserved for women; children were often betrothed as soon as they were born and had little say over whom they married. This was particularly true of royalty and the nobility. The upside of being a slave or low status meant that you could marry whoever you wanted and marry for love. Every cloud and all that.
Although we do not know too much about the Anglo-Saxon marriage, what we do know is taken from charters and wills and suggests that married women had rights that women in later periods did not. Women owned land and possessions and could bequeath them as they desired. Although they were legally the responsibility of their fathers until they married, when the father gave them away to their husband, they could divorce their husbands and take the children if they wished. Evidence also suggests that cooking was not woman's work although they did cook if they were free. Baking was definitely a shared occupation.
Given that royal marriages were based on politics rather than love, concubines were very common. That doesn't sound right as the women were not thought of as immoral or loose women and were often accepted by society. There is not much evidence of wives having concubines (or concubinus - Roman for a male version) but I'm pretty sure they did. They do in my books anyway. The peoples of the Dark Ages had, I believe, a good chance of finding love in all its forms. Marriage was the official public declaration of status. It could work and I'm sure many did. Where it did not offer a true relationship of the heart, people would look elsewhere. To have gods such as Freya, Ing and Frigg who portrayed love in an earthy way unlike the soppy ways of Valentine says it all.
Incidentally the word 'love' comes from the Anglo-Saxon word 'lufian', which means "to love, cherish, show love to; delight in, approve".