We can analyze it from several dimensions. First of all, we need to consider the essential significance of sending photos. Generally speaking, sharing small details of daily life, such as photos of eating, is a common way of interaction between couples, which usually means sharing and caring for each other.

Send photos of lunch to your boyfriend at noon. Your original intention may be to let him know about your lunch or share your life at the moment.

There may be several reasons why he didn't reply: first, he may be very busy and didn't see or reply to your message immediately;

Second, he may feel that there is no need to say more, because you have established enough tacit understanding and understanding, and it is not necessary to share every time with a linguistic response;

Third, he may not be very good at or used to expressing his feelings about these daily details through language.

Later, he also shared photos of his cooking, probably before responding to you in his own way. He may choose to do this because he wants to show his life, or let you see his efforts and care. Similarly, he did not attach a written explanation, which may be due to some of the above reasons.

In this case, my advice is not to over-interpret the meaning behind this interaction. The communication between lovers is complex and subtle, and sometimes it doesn't need too many words to convey emotions. If you think it is necessary, you can try to communicate with him directly and ask his thoughts and feelings, which may be more conducive to understanding and communication between you.