The lyrics describe a sense of sadness and nostalgia that the speaker feels when they are with someone who reminds them of a past love, causing them to feel sentimental and melancholy.

Meaning of "A Little Sentimental" by Marty Robbins

The lyrics of "A Little Sentimental" convey a bittersweet sense of longing for a past love that continues to linger in the speaker's heart. The presence of the person they are currently with stirs memories of a lost love, leading to feelings of sentimentality and melancholy. The repetition of the lines "Don't mind me if I'm a little sentimental" and "You remind me of the girl I used to know" emphasize the internal conflict the speaker is facing, trying to balance the present with the past. The lyrics evoke a sense of yearning for a time gone by and the wistful reminiscing of a past relationship that still holds emotional weight for the speaker.