someone please give me advice

so i’ve been dating my boyfriend for a little while now, and i just don’t think the energy is the same. at the beginning of our relationship he’d always text first and give me a lot of affection. now i usually initiate the conversations and i always say “i love you” first. i haven’t seen him in a week because he’s been on vacation so maybe that’s why? like i’m not sure, but now he’s becoming to just text me to ask for nudes when he’s horny, and he asks almost everyday if i’m on my period. i don’t think he’d cheat, but maybe he’s less interested? he asked to hang out tomorrow but also invited one of my best friends over too which was a little iffy. but than he also wants me to meet his family so i’m really confused. like i don’t know how to interpret these mixed signals.