I think a lot of get confused by the "choice" option given for the Lovers card.
In the early tarots, like the Marseille, the card pictures a man choosing between 2 women. But the meaning is not what it looks like, to our modern eyes. We love where we will, we choose the work or study we love, we marry where we please--we exercise individual freedon, as a 'right' that we all have.
Back in those days, when this image was first created, Love and marrage did not go together usually. You married for your family, for property, for money, for allieance, for property, for advantage. Marriages were essentially arrainged. Forced marrages were not uncommon. So one of the women in the picture would represent the person (or choice) you should, out of duty, choose. the other woman--(and on a lot of old decks, she's younger and prettier than the other) represents the thing or person that you actually love or want for yourself as an individual. In the middle ages love was considered a personal disaster. It had the power to overthrow all the carefull arraingements that families and peole had made fo themselves. Look at 'Romero and Juliet'- even if he hadn't killed her brother they would not have been allowed to marry unless the two heds of family decided that they wanted to unite for some very practical reason.
When the picture on the Lovers card changed in more modern decks (and I think that was around the turn of the 20th century---I could be wrong) it reflected the change in attitude towards Love, and choosing one's own partner, or one's own dream.
Given all that, it seems to me that the Lovers card speaks of both choice and commitment very well. Hope this was helpfull.