What does it mean that my boyfriend only sends me messages without calling?

You may think too much. Just sending a message to contact you doesn't mean he doesn't like you. Maybe it's to save phone bills, maybe it's because it's inconvenient to call at work, maybe it's because you are introverted and think language expression is not as good as SMS ... You haven't known each other for a long time, so you can spend more time getting to know him. I think, since he introduced you to friends, he must like you very much. How can there be family members who are forced to get married in this era? Finally, I wish you happiness!