u/HauntedDolI

Hi! This is my first time sewing a v-neck together. I used the mattress stitch to join my v-neck together. The only issue is that the thread circled above starts to loosen up the rest of it because of simply being lightly tugged at or moved. Do I knot it? I don’t think weaving it in will help much if at all but I still do plan on weaving it in. Thank you for all and any help!