help relationship problems

So lately I've been feeling very lonely extra lonely ! So my boyfriend hasn't been making me feel better about any situation, he's starting to do things differently and it's really scaring me, like he's doesn't tell me that he's going out with his friends anymore, instead he just goes and doesn't text until he gets back ! & then he doesn't even say I love you anymore like how he used to say it ! I'm really scared and I don't know if I should prepare myself for the worse or should I just keep ignoring everything and just go about my day. I've even thought about calling my ex because that's how lonely I feel and me and my ex haven't talked in like months ! I need advise ladies please help !