@MilzeK12 It varies greatly depending on numerous variables and the situation.
Is it a lack of enthusiasm in the relationship? Or is the communication style between you two simply different? For if it's a fairly new relationship some people's introverted communication styles can be seen as "dry," and that is something worth looking into.
Is he going through anything difficult or different lately that may cause him to be closed off, and perceivably "dry"? Such as work, school, personal stresses and anxieties?
Are there any distractions in his life that are keeping him otherwise occupied and less readily available to spend time with you, or absorb his energy, leaving him lethargic and less humerous, genuine, or witty as he might have previously been? Such as hobbies, work, school, education, job, responsibilities.
Is there any underlying issues in the relationship that would cause emotional distancing? Not to say it's anyone's fault, however, if there are any underlying issues in the relationship, such as unresolved conflicts, it can effect how he communicates.
Overall it's just good to have an open conversation, talk to him about how you are feeling. Use I statements. "Lately, I have been feeling.... because/when you....." Don't just address the issues without giving reasons, for example: "Why are you doing this," "stop doing this."
Without being argumentative, let him know how his behaviour is making you feel. Communication among other things is the key to a healthy/stable relationship.
