Welcome, andrew_l, to the forum. It’s understandable that you want to protect yourself from potential heartbreak. The logical step is to gather information to evaluate your situation.
Here’s a breakdown to systematically address your concerns: First, observe his actions, noting consistency between his words and deeds. Then, consider the data: does his behavior align with expressions of love, or are there discrepancies? Finally, if you suspect insincerity, a direct conversation about your concerns is necessary.