There are always some true touching stories behind many good love songs and romantic music. Music is an expression of feelings and emotions that cannot necessarily be expressed through written or spoken word; it is also an artist's expression of their feelings. Many songs have truly touching stories behind their conception and development beyond just song lyrics.
If you are looking for good love songs, they do not necessarily have to be one of the songs written with true love stories at its route; rather, romantic music partly gets its deep sentiment in what it means to you and your love story. Many true love stories attach a particular song to the relationship if the song is somehow correlated with a specific event, such as first kiss, first date, or the first time the couple said, "I love you." Even if the song is not necessarily a love song, it can take on deep meaning to a couple, and become part of one of that specific relationship's touching stories, because it is associated with a milestone in that relationship.
In relationships in which music is an important hobby or part of the couple's life, songs can develop even deeper meaning beyond relationship's milestones. Most couples have a specific song that they consider to be "their song." However, others may have an entire soundtrack! A love song would depend on that specific couple; it could be something deep, traditional, and romantic, or it could be a song that reminds one partner of the other. Some may even be funny, or considered strange because they are not particularly romantic. However, a song gets its meaning from the significance that that particular couple ascribes to it.
Songs can be important to a relationship as well. Music often has a soothing effect that can even boost a depressed mood; that effect may be exacerbated if the song is particularly associated with a happy memory or a loved one. Additionally, music can be a great way to personalize a relationship. A couple may have one specific song associated with the relationship, and if the relationship progresses this far, the song a couple shared their first dance or first kiss to can make a great wedding song. Further, if the couple finds music to be a significant part of both of their interests, it can be fun for them to explore new bands together, attend concerts and shows as a couple, or even make each other mixed albums or play lists of significant songs. It can even be a great way to bond and reduce the stress of planning a wedding, if the couple selects their wedding songs together.
Although there are very traditional romantic songs, ultimately, the songs true meaning to a couple, and its value as a romantic song, is determined by the couple and the meaning they ascribe to specific songs. A love song does not have to be mushy or romantic, or overtly emotional to gain sentimental value; it only has to carry some import to the couple and their relationship.