How do guys feel when a girl says I miss you

The first thing to look at is how long things have been quiet and how the last few conversations went. If you have been talking every day and the banter is easy, I miss you is most likely a simple expression of interest and maybe a nudge to see each other sooner. If there has been a long stretch of short replies or cancelled plans, the same words can mean she wants reassurance that you are still around. In both cases she is telling you she has a feeling about you. Pay attention to whether she is asking for something specific, like time, a call, or a reply, or whether she is just sharing the thought. Her tone in earlier messages tells you more than the line itself.

A quick read of the bigger picture keeps you from building a whole theory out of three words. Ask yourself whether you have been equally invested in the conversation or whether she has been doing more of the reaching out. That imbalance matters more than any single text.

Her message is short and warm, so your reply should match that size. Two options work well here. The first is a warm acknowledgment that stays short and lets her decide the next step, for example by saying you have been thinking about her too and leaving room for her to pick up the thread. The second is a light invitation that puts a real option on the table without locking it down, such as mentioning something you would like to do together and asking if she is free soon. The first kind keeps things easy. The second moves things forward. Neither needs to explain your feelings in detail.

What a good draft leaves out is any attempt to measure how much she misses you, any joke that turns the moment into a bit, and any question that makes her justify her message. Keep the focus on the two of you spending time, not on proving or testing the feeling.

Timing does a lot of work here. If she sends I miss you during the day and you answer within a few hours, the reply feels attentive. If she sends it late at night, a reply the next afternoon is usually fine, since she is unlikely to be waiting by the phone. What you want to avoid is replying in a way that signals you were stewing over it for hours. A reply sent quickly and casually reads as comfortable. A reply sent after a long gap with heavy wording reads as a big deal, which can push her to backpedal.

If she does not respond to your reply, give it a day or two before any follow up, and make the follow up a fresh, low-key message rather than a reminder. If a week goes by with no real engagement, it is reasonable to stop chasing and let her come back to you. If she keeps sending warm messages and never makes plans, that tells you she likes the connection but may not be ready to meet, and you can decide whether that works for you.