According to a 2019 review, sending spontaneous text messages helps to convey a sense of continuous presence in your partner’s life. The feeling that conversation could be taken up at any time (respecting of healthy boundaries) and even across distance, communicates a sense of closeness and helps construct a sense of shared space. During the time you spend apart, consider sending a text that shows your appreciation. Let them know you’re thinking about them. It can be as simple as a flirty message, sharing something that reminded you of them, or simply asking them how their day is going.